The US president is attending a Nato summit after a leaked report suggested US strikes set back Iran only "a few months".

The bomb dropped on Nagasaki was 20 kilotons. Today, that’s considered small. Such are the descriptive words of nuclear historian Alex Wellerstein, who created the generally cited NUKEMAP simulator.

United States President Donald Trump’s welcome announcement of a ceasefire between Israel and Iran shows the extent of ...

Some in South Korea are considering the development of nuclear weapons, but Koreans have already experienced the horrors of ...

Bomber pilots made the 18-hour flight from Missouri to Iran undetected, soaring miles above the Earth and refueling midair ...

The fraught relationship between the U.S. and Iran isn't new. U.S. involvement in, and conflict with, Iran is complicated and ...

A new book by New Mexico-born author Mariah Blake explains how a previously unknown Manhattan Project program ushered in the ...

Trump accused both sides of breaking the agreement hours after it went into effect, saying he’s “not happy with Israel” or ...

President Donald Trump claimed that Israel and Iran had agreed to a “complete and total ceasefire” soon after Iran launched a ...

Fears of conflict loom large after the United States inserted itself into the Israel-Iran war, raising urgent questions about ...

Israeli Prime Minister Benjamin Netanyahu has long lobbied American presidents to help Israel bomb Iran. None have taken him ...

Experts warned that worldwide efforts to contain the spread of nuclear weapons by peaceful means would be at stake in the ...