WASHINGTON - US President Barack Obama said on Tuesday he expects more posturing by North Korea and, while he does not believe the Asian nation has the capacity to put a nuclear weapon on a ballistic missile, the United States is preparing for "every contingency.""I think all of us would anticipate that - you know, North Korea will probably make more provocative moves - over the next several weeks," Obama told NBC's Today."But our hope is that we can contain it and that we can move into a different phase in which they try to work through diplomatically some of these issues," he said.