Armenia and Azerbaijan have resumed fighting in the disputed territory of Nagorno-Karabakh, just minutes after a “humanitarian ceasefire” was supposed to go into effect early Monday morning. It was the third truce to fail since the conflict erupted on September 27. Last week Russian President Vladimir Putin said the fighting has left almost 5,000 dead on both sides — far more than the official death toll of less than 1,000 cited by governing authorities. Tens of thousands have fled their homes, with many left sheltering underground for weeks.