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For the past decade, much attention has been devoted to the potential consequences of a nuclear‐armed Iran. Yet the binary ‘acquisition/restraint’ lens through which the Iranian nuclear issue is frequently viewed is limiting. There is now much evidence to suggest that Iran is engaged in a strategy based on nuclear hedging, rather than an outright pursuit of the bomb. This does not change the need to contain Tehran's proliferation potential, yet it does add another layer of complexity to the challenge. Iran will retain a low level of latency whatever the final outcome of longstanding diplomatic efforts to constrain the scope and pace of its nuclear efforts. This article will explore the implications of Iranian nuclear hedging and consider how regional rivals might interpret and respond to Tehran's nuclear strategy. On a larger scale, the article will explore the potential impact of the international community's approach to the Iranian case—implicitly recognizing, even giving legitimacy to, hedging—both in terms of the future of the Nuclear Non‐Proliferation Treaty (NPT) and the ability of the international community to limit the negative effects of this form of proliferation behaviour.  相似文献   
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Summary.   Epigraphic and isotopic analysis of the lead ingots recovered from a shipwreck off Capo Passero (in Sicily) in mid-2006 suggests that the ingots were produced in Spain, in the Cartagena region. The shipwreck is estimated to have occurred around 38 BC, at the beginning of the Hispanic era. This provides further evidence that the Romans were trading lead throughout the Mediterranean Sea.  相似文献   
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P. M. WARREN 《Archaeometry》1987,29(2):205-211
A recent argument for raising the absolute date of the beginning of the Aegean Late Bronze (LB) Age to about 1700 B.C. is critically examined. It is argued here that: (1) the alabaster lid from Knossos did have the strati-graphical context assigned to it by Evans, in all probability Middle Minoan IIIA, c. 1650 B.C.; (2) the attempt to date the alabastron found in an early Eighteenth Dynasty context at Aniba to Late Minoan IIIA:1 is open to objections; (3) radiocarbon dates from Aegean LB I contexts are too wide in their calibrated ranges and too inconsistent both within and between site sets to offer any reliable grounds at present for raising Aegean LB I absolute chronology to 1700 B.C. Other evidence, however, suggests this period began about 1600 B.C., i.e. some fifty years earlier than the conventional date of 1550 B.C.  相似文献   
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