Newsclick discusses with Aijaz Ahmad the rising tensions concerning North Korea. Aijaz Ahmad says there have been provocative war games taking place every year involving South Korea, the United States and Australia to simulate an attack on North Korea. But, of late, there is a distinct escalation at the level at which the United States is posing this threat. It is in the interests of the US to whip up a war hysteria in order to create a popular demand for the return of its tactical nuclear weapons to South Korea which were withdrawn in 1991 as part of a bilateral agreement with North Korea. These moves are also aimed at building a new cold war against China. The only guarantee that North Korea has for its security is its nuclear power.