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Nuclear weapons and u. S. National security policy. Hosted by the Brookings Institution its about 2 hours. Were thrilled to have you here today to discuss the Trump Administration Nuclear Posture review. An important document that came out on grounds hog day, february 2nd. And the National Defense strategy of january. So doing a nice job keeping the clock running smoothly. Prior to now the unveiling of the budget request. Were thrilled to have david beginning our discussion today. He has one of the longer titles but most important. The Principal Deputy under secretary for defense of policy. A ...

Cspan. Next, a forum on recently unveiled Nuclear Posture review by the Trump Administration. Leading off, remarks by defense undersecretary of policy, David Trachtenberg, followed by discussion with Nuclear Policy specialists. Live coverage due to start shortly. I am mike oh hanlin with the Foreign Policy program. Happy to have you to discuss the Trump Administration Nuclear Posture review, came out february 2nd, following earlier National Security strategy of december and National Defense strategy of january. So the administration is doing a nice job keeping its clock work running smoothly. ...

The U.S. nuclear weapons stockpile has changed dramatically throughout the course of its existence. From a handful of nuclear weapons of relatively simple design throughout the second half of the 1940s to a peak number of 31,255 warheads in the 1970s, the variety and capabilities of warheads in the U.S.

Part of the current effort to maintain a viable U.S. nuclear deterrent is the development of a warhead dubbed the W93, the request for which was first introduced in the President’s 2021 budget request. The W93, along with its Mark 7 (Mk7) re-entry vehicle that holds the warhead, will replace W76 and W88 warheads found atop the Navy’s Trident II D5 submarine-launched ballistic missiles (SLBMs) with a safer design.

Lt. Gen. Robert Ashley, director of the Defense Intelligence Agency, said Wednesday that Russia is likely conducting low-yield nuclear-weapons tests. That’s an indication that Russia doesn’t share the same understanding of the Comprehensive Test Ban Treaty that the U.S. does.  In the United States’ understanding, the test-ban treaty prohibits any nuclear-weapons experiments that produce yield.