Russian soldiers were snug in their sleeping bags, sleeping off a hard day of combat in a building presumably somewhere along the front line in eastern Ukraine when their slumber was interrupted. An explosive first-person-view drone operated by the elite Birds of Magyar unit slipped into the building—and struck the snoozing Russians,

The U.S. reached deals with Ukraine and Russia to pause their attacks over the Black Sea and against each other's energy targets, but it was not clear when and how the deals would come into force.