MOSCOW (AP) — Russia and the Syrian government will open humanitarian corridors in Syria's embattled city of Aleppo and offer a way out for opposition fighters wanting to lay down their arms, Russia's defense minister Sergei Shoigu announced on Thursday. Shoigu said in televised comments that President Vladimir Putin has ordered a "large-scale humanitarian operation" that will be launched outside Aleppo to help civilians as well as allow fighters who wanted to lay down the arms to surrender. Assad, meanwhile, issued a decree offering an amnesty to armed opposition fighters who surrender within three months and urging all detainees to be freed.