A disturbing simulation from Princeton University known as Plan A illustrates how a limited tactical nuclear confrontation ...

The sobering four-minute video produced by experts at Princeton University’s Program on Science and Global Security, depicts deadly nuclear bombs raining down on major population centres on both sides ...

Add Yahoo as a preferred source to see more of our stories on Google. A simulation called "Plan A" produced by researchers shows how the use of one so-called tactical or low-yield nuclear weapon could ...

Analysts say the exercise exposed vulnerabilities that could be exploited long before the continent is fully prepared. The scenario has reignited debate over how quickly a wider crisis could unfold. A ...

Huddled on a disused underground train platform in central London, hundreds of British soldiers played out their response to ...