— Hundreds of Armenians waiting for gasoline to flee the disputed region of Nagorno-Karabakh were injured in an explosion at a fuel depot on Monday, according to local officials, as senior U.S. officials visited Armenia and pledged humanitarian support to deal with a flood of refugees that began Sunday ahead of an imminent takeover by Azerbaijan. Azerbaijan recaptured most of Nagorno-Karabakh, a mountainous area that is internationally recognized as its territory, during a brief war in 2020 that ended decades of Armenian occupation and control of the region. A truce hastily brokered by Russia helped end the fighting but left tens of thousands of ethnic Armenians living in the region.