NEW : PM Putin : Much agreement in `` well-intentioned , substantial '' talks . Obama cites respect for Russian people , shared history that transcends competition . Obama is in Moscow for two-day summit with President Medvedev , Putin . The two leaders are expected to discuss a range of issues including the crisis in Ukraine and Russia's role in international affairs.
NEW : PM Putin : Much agreement in `` well-intentioned , substantial '' talks . Obama cites respect for Russian people , shared history that transcends competition . Obama is in Moscow for two-day summit with President Medvedev , Putin . Obama , Medvedev sign `` joint understanding '' on cutting nuclear arsenals .