Both Russia and Ukraine continued long-range strikes through the weekend and into Monday. On Tuesday, Ukraine's air force said Russia launched 59 drones into the country overnight, of which 47 were shot down or suppressed. The air force reported impacts of 12 drones across nine locations.

"It was a Ukrainian drone aimed at Russian targets," General Margo Palloson said on Tuesday, August 26, Estonia's public broadcaster ERR reported. But the ISS blamed Russian GPS jamming for the drone going off course and landing in Estonia, a NATO member and staunch supporter of Ukraine.

Many of the drones aren’t particularly fast or high-tech, but they are cheap enough for the Kremlin to launch more than 700 in one night, in an effort to overwhelm Ukraine’s air defenses. Here’s what we know.