"Israel is not a party to the Nuclear Non-Proliferation Treaty and has never publicly declared what is widely considered to be an extensive nuclear weapons program. A conference might force Israel to acknowledge it. Since adopting a final document requires consensus, the rejection by the United States, backed by Britain and Canada, means the entire blueprint for global nuclear disarmament and non-proliferation for the next five years has been blocked after four weeks of negotiations. The next treaty review conference is in 2020. That has alarmed countries without nuclear weapons, who are increasingly frustrated by what they see as the slow pace of nuclear-armed countries to disarm."