President Trump is pressuring Iran to either curtail its nuclear program or face military strikes, after Iran amassed a large stockpile of highly enriched uranium. Here's what to know.

Key elements of the Trump administration’s arguments this week for another military campaign against Iran do not hold up.

Israel struck key Iranian nuclear sites to curb bomb development amid rapid uranium enrichment and rising tensions.

Add Yahoo as a preferred source to see more of our stories on Google. A Russian Yars intercontinental ballistic missile launcher rolls on Red Square during the Victory Day military parade in central ...

The operation marks the most direct American military intervention inside Iran in decades and has reignited fears of a ...

For the first time in more than half a century, there are no binding restraints on the buildup of the largest nuclear forces ...

North Korean leader Kim Jong Un has unveiled a battery of huge nuclear-capable rocket launchers ahead of a key congress of ...

In a Defending the Nation column, reporter James Knuckey assesses some of the biggest defence stories including why Labour needs to get a move on with spending.

Trump’s hardline stance on Iran and nuclear weapons, alongside foreign policy moves, dominate key moments of his speech.