Tehran, home to 10 million people, suffers from severe traffic congestion making a speedy evacuation impossible.

US president's comments come after he warns Tehran residents to leave 'immediately'.

The violence in Khan Younis adds to a string of attacks that have killed hundreds of desperate people seeking food.

Ugandan soldiers said they 'occupied' two DRC towns as the Rwandan-backed M23 continues to hold territory elsewhere.

A spook for over a quarter of a century, Metreweli was 'Q' at the spy agency. Now she'll be known as 'C'. Here's why.

The NPT bars members that don't have nuclear weapons from acquiring them. But critics call the treaty discriminatory.

Concerns grow that the conflict could spark a wider regional war.

Incident in strategic waterway said to be 'not security related' despite potential effects of conflict.

Another 26 are injured in blast near the city of Changde, Hunan Province, Xinhua News Agency says.

Israel’s attacks on Iran's atomic facilities have increased risks of nuclear and chemical contamination, experts say.