U.S. President Barack Obama has told his Russian counterpart Vladimir Putin that he must recognize the new Ukrainian president in order to help de-escalate the crisis in eastern Ukraine.
The much anticipated encounter came on the sidelines of a lunch held Friday to mark the 70th anniversary of D-Day.
Putin is believed to have publicly voiced his support for new Ukrainian President Petro Poroshenko.
A White House official said Obama also told Putin during their 15 minute meeting that if Moscow works with the new Ukrainian authorities there could be "openings" to reduce tensions in the region.
Deputy national security adviser Ben Rhodes added Obama had demanded Russia sever support for separatists in eastern Ukraine, and to stop providing them with arms and other supplies.