A humanitarian aid convoy was attacked in Syria on Monday after the Syrian military declared that a seven-day partial cease-fire was over and immediately began intensive bombardments in rebel-held areas of Aleppo, the divided city that has come to symbolize the ravages of the war.

The convoy attack, military declaration and bombings were the strongest signs yet of the gradual unraveling of a broader agreement between Russia and the United States aimed at restarting peace talks to end the conflict in Syria, which has killed an estimated 500,000 people and displaced millions. Continue Reading.