Poland said operations by Polish and allied aircraft on Thursday related to Russian strikes on Ukraine had concluded and that no violations of Polish airspace were observed. "Due to the reduction in the level of threat from missile strikes by Russian aviation on Ukrainian territory,

If Putin rejects a bilateral summit with Ukraine’s leader, the U.S. should take strong measures, Zelensky said. Russia said much needs to be worked out before a meeting is possible.

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.