Suchergebnisse

Most traditional accounts identify the Linebacker I and Linebacker II campaigns as the most effective and consequential uses of U.S. air power in the Vietnam War. They argue that deep interdiction in North Vietnam played a central role in the defeat of the Easter Offensive and that subsequent strategic attacks on Hanoi forced the North Vietnamese to accept the Paris accords. These conclusions are false. The Linebacker campaigns were rather ineffective in either stopping the Communist offensive or compelling concessions. The most effective and consequential use of U.S. air power came in the form of close air support and battlefield air interdiction directly attacking the North Vietnamese Army in South Vietnam. The success of these air strikes hinged on the presence of a U.S.-operated tactical air control system that incorporated small numbers of ground advisers, air liaison officers, and forward air controllers. This system, combined with abundant U.S. aircraft and a reasonably effective allied army, was the key to breaking the Easter Offensive and compelling Hanoi to agree to the Paris accords. The effectiveness of close air support and battlefield air interdiction and the failure of deep interdiction and strategic attack in the Vietnam War have important implications for the use of air power and advisers in contemporary conflicts in Iraq, Syria, and Afghanistan.

Since the end of the Cold War the United States and other major powers have wielded their air forces against much weaker state and non-state actors. In this age of primacy, air wars have been contests between unequals and characterized by asymmetries of power, interest, and technology. This volume examines ten contemporary wars where air power played a major and at times decisive role. Its chapters explore the evolving use of unmanned aircraft against global terrorist organizations as well as more conventional air conflicts in Bosnia, Kosovo, Afghanistan, Iraq, Lebanon, Libya, Yemen, Syria, and against ISIS. Air superiority could be assumed in this unique and brief period where the international system was largely absent great power competition. However, the reliable and unchallenged employment of a spectrum of manned and unmanned technologies permitted in the age of primacy may not prove effective in future conflicts.

The title alkaloids, 1 and 2, have been prepared using cross-coupling chemistries and together with various analogues they have been evaluated for their capacity to inhibit acetylcholinesterase. Contrary to an earlier report, it was found that biaryl 1 is not a significant inhibitor of this enzyme, and neither are any of its congeners, including alkaloid 2. ; We thank Jinan University, the Australian Research Council, and the Institute of Advanced Studies for financial support. H. S. K. and G. J. C. are the grateful recipients of scholarships provided by the Australian Government.