KIEV, May 17 (Reuters) - Ukraine’s main parliamentary coalition broke up on Friday after the People’s Front party quit outgoing President Petro Poroshenko’s faction, the parliament speaker said.

Parliament now has one month in order to form a new coalition or else the president can dissolve parliament and call snap parliamentary elections. (Reporting by Natalia Zinets; writing by Tom Balmforth; editing by Matthias Williams)