U.S. Vice President Joe Biden spoke by phone on Friday with Ukrainian President Petro Poroshenko and both leaders expressed concern over a recent surge in fighting in eastern Ukraine, the White House said, APA reports quoting Reuters.
"The Vice President relayed that the United States had sent a message to Russia that the world is watching and underscored the need to de-escalate the situation. He also urged Ukraine to show restraint," the White House statement said.