Ukraine peace deal only way forward - EU's Mogherini

European Union Foreign Policy Chief Federica Mogherini speaks to Bosnian politicians in Parliament building in Sarajevo, February 23, 2015. REUTERS/Dado Ruvic

LONDON (Reuters) - A European-brokered ceasefire deal remains the only way to secure peace in Ukraine, the European Union's foreign policy chief Federica Mogherini said on Tuesday.

"We have to make it succeed. This is the only agreement that was signed by the parties, it has been supported by U.N. Security Council resolution, and it is the only way we have to make peace possible in Ukraine," Mogherini told BBC radio during a trip to London.