evidence: Russian column 'disguised as separatists' enters Ukraine Ukrainian troops are battling a Russian military column disguised as separatist fighters that had crossed into Ukraine and was heading towards the city of Mariupol, a Ukrainian military spokesman said Monday. Russia has denied the claims. [...] "This morning there was an attempt by the Russian military, in the guise of Donbas fighters, to open a new area of military confrontation in the southern Donetsk region," spokesman Andriy Lysenko told journalists.