President Trump’s revocation of a former CIA director's security clearance has stirred up a debate about access to government secrets, free speech, and democratic norms.  

The military exercises in and around Norway are a significant test of NATO’s collective defenses at a time of rising geopolitical tensions.

A collapse of this Cold War–era INF treaty, which many believe has favored the United States, could unleash a new age of nuclear weapons competition with Russia.