Russian forces secured limited advances east of Kyiv and north from Crimea on March 12 but continue to face logistical challenges, mounting casualties, and sustained Ukrainian counterattacks. Russian forces did not conduct offensive operations northwest of Kyiv in the past 24 hours. Russian forces made limited advances around Chernihiv and toward Kyiv’s eastern outskirts after pausing for several days. Continued Ukrainian counterattacks and successful operations by Ukraine’s Territorial Defense Forces continue to threaten Russia’s long line of communication in northeastern Ukraine. Russian forces captured unspecified “eastern outskirts” of Mariupol on March 12 and continue to shell the city in a likely effort to force it to capitulate.