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1.
International Atomic Energy Agency (IAEA) safeguards are under more stress today than at any time in their history. Compliance concerns, a shortage of resources and technology, and growing responsibilities threaten to undermine the effectiveness and credibility of this vital and fundamental pillar of the nonproliferation regime. To address this challenge, the United States recently launched the Next Generation Safeguards Initiative. The goal of this initiative is to ensure the IAEA makes the fullest possible use of its existing authority to prevent the diversion of safeguarded material and to investigate suspicious activities. The initiative will advance state-of-the-art technology, foster the development of a new generation of safeguards experts, and promote technology collaborations and safeguards-conscious infrastructure in states using or pursuing nuclear power. Although it has a domestic focus, the initiative's intent is to catalyze a much broader commitment to international safeguards in partnership with other governments and the IAEA.  相似文献   

2.
In February 2012, Iran announced its willingness to resume negotiations with the Western powers. This statement followed in the wake of a damning report by the International Atomic Energy Agency (IAEA) Board of Governors and the imposition of additional sanctions by the international community on an Iranian economy already under pressure. Tehran's announcement also coincided with increased speculation regarding an Israeli military strike on Iranian nuclear facilities. At the same time, however, this seemingly positive step appeared to be undermined by Iran's concomitant announcement that “huge” technical progress has been made on Iran's nuclear programme. This article will explore the significance of the recent political, diplomatic and technical developments in the Iranian nuclear affair and situate them in the broader context of Tehran's nuclear strategy. The analysis will assess the potential for this latest phase in the Iranian nuclear crisis to reverse Iran's current trajectory and initiate a rapprochement between Iran and Western powers.  相似文献   

3.
Syria's slide into sectarian civil war in 2011 raises a new fundamental knowledge question about the conditions under which power-sharing pacts can be clinched as an approach to war termination. When intrastate conflicts escalate into violent sectarian struggles, power-sharing is a likely basis of an eventual political settlement in situations where partition is off the table. This article contends that there remain two puzzling knowledge gaps about power-sharing as the basis for peace agreements to end civil wars: first, the specific conditions under which elites find it in their own interest to share power with bitter adversaries rather than fight on the battlefield, and second, how war-ending elite-negotiated pacts may evolve into more enduring social contracts. These puzzles, critical for policymakers and still unresolved in the scholarly literature, suggest the need to develop more contingent- and context-specific knowledge if research findings are to more capably contribute to peacemaking efforts.  相似文献   

4.
Through examining the life and work of the man who is generally known as the Apostle Paul, I hope to challenge the idea that the founder of Christianity was a saint and replace it with the possibility that he really was an agent-provocateur working for the Roman administration in Palestine and various other parts of the Empire. Paul's biography and his own letters, both of which were taken up in the New Testament, hold numerous clues to the effect that this former persecutor, originally named Saul of Tarsus, never left the ranks of the government, but instead went undercover after his famous ‘conversion’ en route to Damascus. The self-proclaimed successor-to-Jesus was not only treated dramatically differently from Jesus by the Romans, but they were his friends and allowed him to live and work for 20 years instead of crucifying him. Jesus' original followers distrusted Paul, and made various attempts to kill him throughout his life. I will conclude by arguing that Paul's claim that Jesus, this candidate-king of the Jews, was the Messiah and had been crucified as the will of God (the prime assumption upon which Christianity is based) should be read as a sadistic mockery of Jewish faith, meant to divide a Jewish resistance organisation and pacify it.  相似文献   

5.
According to common wisdom, the Golan provides Israel with an ideal platform for its warning stations as well as the best available defense line against a massive Syrian ground attack. Challenging this belief, this article compares the present situation with an alternative defined by (a) a complete Israeli withdrawal from the Golan, (b) a complete demilitarization of the evacuated territory, and (c) considerable limitations on Syrian military presence in the area between the Golan and Damascus. The article reaches two conclusions. First, that a combination of means, primarily airborne and space‐based platforms, can effectively answer Israel's northern intelligence needs. Second, the security arrangements set above, combined with recent revolutionary military technologies and its relative advantage in this domain, offer Israel an effective ‐ in some respects even a better ‐ alternative, to the present defense line.  相似文献   

6.
The events of the 1973 Arab‐Israeli War serve as an early indicator of Iraqi leader Saddam Hussein's willingness to use military power to address foreign policy concerns. In that war, Iraq intervened on the Syrian front with an armored division, other supporting units, and over 100 aircraft. This intervention, which occurred despite severe political and military difficulties, was larger than any previous Iraqi contribution to the anti‐Israeli struggle. Baghdad later asserted that Iraqi forces had saved Damascus from possible Israeli occupation, and these claims have been widely repeated by a variety of authors of different nationalities with various degrees of agreement or skepticism. Nevertheless, Iraqi claims to have saved Damascus from Israeli capture are false since the Israelis did not view the seizure of the city as important to their strategy for victory. Rather, the Iraqi presence on the Golan Heights was useful to the Arab war effort as one of many factors helping to delay the Israeli advance and prevent some important Syrian targets from being placed within artillery range of the Israeli force. Iraqi military shortcomings were well highlighted in this conflict, and many were repeated in the early stages of the war with Iran.  相似文献   

7.
Despite the fact that Italy hosts almost half of the remaining estimated 150–200 US tactical nuclear weapons (TNW) that are currently deployed in Europe, case studies of Italy have been largely neglected. The article seeks to fill that gap by outlining the key elements of Italy's position regarding the presence, role, and future of TNW in Italy. By considering both the military and political-symbolic dimensions of TNW, the author argues that Italy has largely embraced the process of the devaluation of nuclear weapons; however, this is offset by the country's determination to preserve the principles of solidarity and the indivisibility of Euro-Atlantic security. By making the alliance's cohesion a priority, Italy appears willing to postpone the complete elimination of TNW from its territory if necessary; despite this, Italy otherwise considers TNW to be not only weapons of little intrinsic value but also obstacles to the global nuclear disarmament program that it strongly supports.  相似文献   

8.
American policy-makers are predisposed towards the idea of a necessary war of survival, fought with little room for choice. This reflects a dominant memory of World War II that teaches Americans that they live in a dangerously small world that imposes conflict. Critics argue that the ‘choice versus necessity’ schema is ahistorical and mischievous. This article offers supporting fire to those critiques. America's war against the Axis (1941–45) is a crucial case through which to test the ‘small world’ view. Arguments for war in 1941 pose overblown scenarios of the rise of a Eurasian super-threat. In 1941 conflict was discretionary and not strictly necessary in the interests of national security. The argument for intervention is a closer call that often assumed. This has implications for America's choices today.  相似文献   

9.
It is pointed out in this paper that Lomax's hyperbolic function is a special case of both Compound Gamma and Compound Weibull distributions, and both of these distributions provide better models for Lomax's business failure data than his hyperbolic and exponential functions. Since his exponential function fails to yield a valid distribution function, a necessary condition is established to remedy this drawback. In the light of this result, his exponential function is modified in several ways. It is further shown that a natural complement of Lomax's exponential function does not suffer from this drawback.  相似文献   

10.
ABSTRACT

This article focuses on the final years of South Africa’s nuclear-weapon program, particularly on the decision-making process leading up to the signature of the 1968 Treaty on the Non-Proliferation of Nuclear Weapons (NPT) by the South African government in 1991. In August 1988, after two decades of defiance, negotiations between the apartheid government and the NPT depository powers (the United Kingdom, the United States, and the Soviet Union) ensued at the International Atomic Energy Agency (IAEA) in Vienna. Despite South Africa being the only state to give up its indigenously developed nuclear weapons and subsequently join the nonproliferation regime, little is known about how the national position on NPT accession and IAEA safeguards evolved. Research carried out in multiple archives using hitherto untapped primary sources and interviews with key actors from several countries show how domestic and regional political dynamics influenced Pretoria’s position on entering the nonproliferation regime. In the process, the F.W. de Klerk government managed to skillfully exploit international proliferation fears to advance its own agenda, thereby connecting South African NPT accession with that of the neighboring Frontline States coalition of Angola, Mozambique, Tanzania, Zambia, and Zimbabwe.  相似文献   

11.
The classical repertoire of insurgency types is under-specified, and does not apply well to the case of Pakistan's conduct of insurgency in Kashmir. Pakistan's approach to insurgency has been a consistent tribal variant of focoism, in which there is a reliance on imported itinerant insurgents to conduct raids to stimulate an uprising. This has its basis in the traditional warfare of the region, learned US insurgency doctrine in the 1960s, and an historical disregard for subject populations, which has led to an aversion to fostering grass-roots political movements.  相似文献   

12.
The build-up of Japan's military apparatus in the 1990s and 2000s has been often regarded by security analysts as indicative of a departure from the country's Cold War strategic posture. Japan appears to be engaged in a process of militarisation that is eroding the foundations of its ‘exclusively defence-oriented’ policy. In the case of the archipelago's naval strategy, such assessments overlook the longstanding significance of a core feature of its defence policy, namely the surveillance of maritime crossroads delivering the wealth of the country. The paper reassesses the evolution of the Japanese strategy since the Cold War by examining the development of the Japanese Maritime Self-Defence Force's submarine force, one of the key components of the defensive shield for these crossroads. The paper argues that with the changes in the security environment of the 1990s, Japan already fielded a mature force with state-of-the-art submarines, and that the rise of a new naval competitor aiming at controlling key strategic points along Japan's sea lanes reconfirmed the critical importance of submarine operations to Japanese national security.  相似文献   

13.
The focus of this research is on self-contained missions requiring round-trip vehicle travel from a common origin. For a single vehicle the maximal distance that can be reached without refueling is defined as its operational range. Operational range is a function of a vehicle's fuel capacity and fuel consumption characteristics. In order to increase a vehicle's range beyond its operational range replenishment from a secondary fuel source is necessary. In this article, the problem of maximizing the range of any single vehicle from a fleet of n vehicles is investigated. This is done for four types of fleet configurations: (1) identical vehicles, (2) vehicles with identical fuel consumption rates but different fuel capacities, (3) vehicles which have the same fuel capacity but different fuel consumption rates, and (4) vehicles with both different fuel capacities and different consumption rates. For each of the first three configurations the optimal refueling policy that provides the maximal range is determined for a sequential refueling chain strategy. In such a strategy the last vehicle to be refueled is the next vehicle to transfer its fuel. Several mathematical programming formulations are given and their solutions determined in closed form. One of the major conclusions is that for an identical fleet the range of the farthest vehicle can be increased by at most 50% more than the operational range of a single vehicle. Moreover, this limit is reached very quickly with small values of n. The performance of the identical fleet configuration is further investigated for a refueling strategy involving a multiple-transfer refueling chain, stochastic vehicle failures, finite refueling times, and prepositioned fleets. No simple refueling ordering rules were found for the most general case (configuration 4). In addition, the case of vehicles with different fuel capacities is investigated under a budget constraint. The analysis provides several benchmarks or bounds for which more realistic structures may be compared. Some of the more complex structures left for future study are described.  相似文献   

14.
ABSTRACT

There is a lingering disagreement among scholars on how the Treaty on the Non-Proliferation of Nuclear Weapons (NPT) affects nonproliferation and disarmament outcomes. Drawing on constructivist scholarship on international norms, this article examines the extent of the NPT's effect in the case of Ukraine's nuclear disarmament. In the wake of the Soviet Union's collapse, Ukraine found itself host to the world's third largest nuclear arsenal. Despite Ukraine's initial commitment to become a non-nuclear state, it proceeded along a difficult path toward NPT accession. Most controversial and directly at odds with the NPT was Ukraine's claim to ownership of its nuclear inheritance as a successor state of the Soviet Union. This article argues that, while much domestic discourse about the fate of these nuclear weapons was embedded in the negotiation of Ukraine's new identity as a sovereign state vis-à-vis Russia and the West, the NPT played an important, structural role by outlining a separate normative space for nuclear weapons and providing the grammar of denuclearization with which Ukraine's decision makers had to grapple.  相似文献   

15.
Traditional analyses of Switzerland's nuclear weapons program often explain both its beginning and its end by merely subsuming it under the broad logic of security calculations: the country originally developed an interest in nuclear weapons due to its precarious security environment after the end of World War II; it ended its nuclear ambitions roughly two decades later when it felt less threatened by external powers. Yet this depiction of the Swiss case brushes aside the historical political context in which Switzerland's nuclear decision-making was embedded. Drawing upon studies in sociology and political theory, this article argues that understanding the Swiss debate on nuclear weapons is possible only if we manage to comprehend the significant political and cultural changes that took place within Swiss society. These changes deeply affected the country's defense and foreign policy conceptions and also altered prevalent notions of neutrality, thereby ultimately foreclosing the nuclear option. In more abstract theoretical terms the article moreover suggests that we need to overcome depictions of objectively given threats or predetermined interests and develop analytical tools that help us disentangle the complex, non-linear ways in which threat perceptions, identities, and preferences evolve and shape states’ proliferation policies.  相似文献   

16.
This article examines Poland's national potential and its international position within the European Union (EU) with respect to security issues. It presents research results based on a comparison of Poland's national potential as it relates to other EU countries, which is useful when evaluating Poland's power within the EU. The article also evaluates Poland's crisis potential, i.e. it identifies those factors that may potentially be treated as threats to national and regional security. Finally, it enables the identification of challenges to Poland's security in the second decade of the twenty-first century. The research is conducted according to a multidimensional comparative analysis, which is perceived by the author as the best available to measure a country's power despite its weaknesses.  相似文献   

17.
Hemiter's entropy model for brand purchase behavior has been generalized for Renyi's measure of entropy which is a more general concept than Shannon's measure of entropy used by Herniter and which includes Shannon's measure as a limiting case. The generalized model considered here is more flexible than Herniter's model since it can give different marketing statistics for different products and it can give these statistics even when only some of the brands are considered.  相似文献   

18.
《Arms and Armour》2013,10(2):106-116
Abstract

Cataneo's scale, published in 1571, relates the weight of shot to the internal muzzle diameter of guns ranging between 0.04–0.21 m. Plots of calculated shot density versus muzzle diameter suggest that diameters of 0.10 m and above apply to iron shot and those below apply to lead and lead/iron composite shot. Similar plots are used to compare Cataneo's scale with other contemporary scales and with scales engraved on the blades of five Italian gunners' daggers dating to around 1650. Variations and errors in the daggers' scales might suggest a symbolic rather than a practical role; nevertheless there is remarkable consistency with Cataneo's scale in the shape of the plots in spite of the considerable length of time after its publication. A simple wooden scale from the Spanish Armada ship La Trinidad Valencera also confirms to Cataneo's general pattern although there appears to be a fundamental error in its mathematical construction.  相似文献   

19.
Russian naval nuclear fuel and reactors pose both proliferation and environmental threats, ranging from the possible theft of highly enriched uranium fuel to the radioactive contamination of the environment, whether due to accident, neglect, or sabotage. Current conditions at Russian naval bases, together with a history of accidents and incidents involving Russia's nuclear fleet, make a convincing case for the large-scale assistance that the G8 is now providing to improve the safety and security of Russian naval reactors and fuel. However, virtually no data has been released to allow accurate, reliable, and independent analysis of reactor and fuel properties, risking misguided international efforts to assist in the areas of nuclear cleanup, nonproliferation, and security. This article identifies and assesses relevant properties and developments related to reactor and fuel design, provides a comprehensive presentation of Russian nuclear naval technologies, and examines technological trends in the context of proliferation and environmental security.  相似文献   

20.
参数估算法是当前装备经济性分析的主要方法,TruePlanning软件为国际主流的装备经济性分析软件。基于TruePlanning软件,以制造复杂度(Manufacturing Complexity)为研究对象,通过对TrueH模块进行深度剖析,分析并确立了结构制造复杂度(Manufacturing Complexity for Structure)的建模思路和模型形式。通过一个实例分析,选取5个必要的输入参数,构建结构制造复杂度的初步模型,并进一步考虑附加参数的输入,对模型进行修正。结果显示了结构制造复杂度对各技术参数的不同响应形式和敏感程度,为开发国产费用估算模型提供了可行的思路。  相似文献   

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