A commander in Ukraine’s strategic port city Mariupol has issued a desperate plea for help, saying his marines are “maybe facing our last days, if not hours” on Wednesday. The West has responded to a renewed Russian push in the east with fresh weapons for Kyiv and a move to increase “Moscow’s international isolation”. The Pentagon said that Ukraine had recently received fighter planes and parts to bolster its air force, declining to specify the number of aircraft and their origin. Kyiv has asked its Western partners to provide MiG-29s, which its pilots already know how to fly and a handful of …