Nuclear War

India-Pakistan nuclear war could kill 100 million, trigger global winter

Worldwide food shortages and mass starvation will follow the deaths as Earth enters a new period of cooling, with temperatures not seen since the last Ice Age, researchers in a new paper say.

Lack of real-world testing raises doubts on US missile defences

The US military says its missile defence system and radar networks will allow it to track and destroy incoming warheads from North Korea or Iran. But a lack of real-world testing raises doubts about US missile defences.