U.S. President Barack Obama speaks during an exclusive interview with Reuters in the Library of the White House in Washington March 2, 2015. REUTERS/Kevin Lamarque
WASHINGTON (Reuters) - U.S. President Barack Obama and European leaders on Tuesday warned Russia that they were ready to step up sanctions if there were further violations of a ceasefire agreement in Ukraine, officials said.
The threats came in statements issued after a video conference that brought together Obama and the leaders of Britain, France, Germany and Italy, as well as the head of the European Council.
