With the German thrust expected in the north, "Stavka" planned several local offensives in the south to weaken the Germans. The most important of these was aimed at the city of Kharkov and would be conducted mainly by the Southwestern Front under Semyon Timoshenko, supported by the Southern Front commanded by Rodion Malinovsky. The operation was scheduled for 12 May, just prior to a planned German offensive in the area. The ensuing Second Battle of Kharkov ended in disaster for the Soviets, severely weakening their mobile forces. At the same time, the Axis clearing of the Kerch Peninsula together with the Battle of Sevastopol, which lasted until July, weakened the Soviets further and allowed the Germans to supply Army Group A across the Kerch Peninsula through the Kuban.