Ukraine braced Wednesday for possible Russian retaliation after firing American-made and supplied missiles into Russia the previous day. The U.S. Embassy in Kyiv closed its doors on Wednesday and warned there were indications Russia was poised to launch a possible "significant air attack" on Ukraine.

Ukraine fired a volley of British Storm Shadow cruise missiles into Russia on Wednesday, the latest new Western weapon it has been permitted to use on Russian targets a day after it fired U.S. ATACMS missiles.

Ukraine conducted a strike against a Russian munitions facility in Bryansk and local residents captured videos of the explosions.