U.S. Secretary of State John Kerry said after meeting with Russia’s foreign minister for six hours that President Vladimir Putin “isn’t prepared to make any decision” on Ukraine until after the Crimea referendum. Kerry said neither the U.S. nor the international community will recognize the results of the referendum. “We believe the referendum is contradictory to Ukraine’s constitution and contradictory to international law,” Kerry said. Sources close to the talks told NBC News on Friday that United States and Ukraine's interim government could offer concessions to Putin only if Moscow ignores the outcome of Sunday's controversial referendum. The concessions would also depend on Russia not moving its forces any further into Ukraine. Lavrov said that the U.S. and Russia were still far apart on the crisis in Ukraine. “We do not have a common vision of the situation,” Lavrov told journalists Friday.