President Trump plans to let the New START nuclear treaty with Russia expire, opting instead to negotiate a new, modernized deal. This decision comes as the treaty's original expiration date approaches,

Zero is how much uranium President Trump says he would allow Iran to enrich under any deal to defuse the latest crisis between Washington and Tehran. Enrichment is the process of refining uranium metal into a more potent form suitable for nuclear power or weapons. Mr. Trump’s hard-line position is known as “zero enrichment.”

Trump threatens Iran with ‘massive armada’ in Gulf and says time is running out to agree nuclear deal - US president has said a ‘massive armada’ is on its way to the country in preparation for a possi

The United States and Russia could embark on an unrestrained nuclear arms race for the first time since the Cold War, unless they reach an eleventh-hour deal before their last remaining arms control treaty expires in less than a week.

Global nuclear diplomacy is at a breaking point. With the last arms control treaty now expired, the United States is pushing for a new three-way nuclear deal with Russia and China - but Moscow is drawing a hard red line.