Armenia and Azerbaijan accused each other of violating a ceasefire on Sunday, minutes after the agreement was set to take effect. The accusations mark the latest development in a decades-long (and recently-intensifying) conflict between the two nations relating to the Nagorno-Karabakh region.
More context: The conflict began in the late 1980s, when the ethnic Armenians who control the Nagorno-Karabakh region (which lies within Azerbaijan’s border) voted to become part of Armenia. That decision ultimately led to a war between the two nations that temporarily ended with a ceasefire in 1994. Over 700 people have now been killed in the recent fighting, which broke out in late September.