Just before he invaded Ukraine, Russian President Vladimir Putin agreed with other leaders that "a nuclear war cannot be won and must never be fought." So why is he eroding a key treaty?

The rare daytime arrest operation triggered one of the bloodiest battles in nearly a year of fighting, leaving shops in Nablus riddled with bullets and a building reduced to rubble.

Heavy snow and high winds are causing blizzard conditions in the Upper Midwest. It's the latest stage of a three-day storm that's placed over half the country under winter weather warnings.

The U.S. faces a shortfall of about 450,000 nurses and 120,000 doctors in the coming years. The Senate's top health committee, led by Sen. Bernie Sanders, is considering bipartisan solutions.