Shift in US nuclear strategy

The World

President Obama proposed a new nuclear strategy that is essentially a “no first use” approach to nuclear weapons. The conditions under which the president would use a nuclear weapon are extremely narrow. If the U.S. was attacked with a biological or chemical weapon by a non-nuclear state, the Obama administration would not respond with a nuclear weapon. David Sanger, chief Washington correspondent for The New York Times brings details from the plan.

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