By Simon Gardner BUCHA, Ukraine (Reuters) – The mayor of a Ukrainian city on the northern outskirts of Kyiv on Sunday showed journalists dead bodies in an area that, he said, Chechen fighters controlled during the month that Russian forces occupied the city. The mayor, Anatoliy Fedoruk, showed a Reuters team two corpses with white cloth tied around their arms which – the mayor said – was what residents were forced to wear by fighters from Chechnya, a region in southern Russia that has deployed troops to Ukraine to support Russian forces. One corpse appeared to have his hands bound by the white…