i7aC5SHCO.fgRussian President Vladimir Putin responded to his isolation at a global summit over his role in fomenting fighting in Ukraine by chastising authorities in Kiev. Putin said his counterpart in Ukraine, Petro Poroshenko, made a “big mistake” by moving to sever banking services and pull out state companies from two breakaway regions. He spoke after Group of 20 leaders berated Russia over the conflict at a summit in Brisbane, Australia. More