EU leaders arrive to mark 60th anniversary of bloc

Italian Prime Minister Paolo Gentiloni, right, speaks with European Council President Donald Tusk during arrivals for an EU summit at the Palazzo dei Conservatori in Rome on Saturday, March 25, 2017. EU leaders gather in Rome on Saturday to celebrate the 60th anniversary of the EU's founding treaty. (AP Photo/Andrew Medichini) (The Associated Press)

The Mayor of Rome, Virginia Raggi, right, stands with Italian Prime Minister Paolo Gentiloni, center, and Italian Foreign Minister Angelino Alfano, left, during arrivals for an EU summit at the Palazzo dei Conservatori in Rome on Saturday, March 25, 2017. EU leaders gather in Rome on Saturday to celebrate the 60th anniversary of the EU's founding treaty. (AP Photo/Andrew Medichini) (The Associated Press)

Austrian Chancellor Christian Kern speaks with the media as he arrives for an EU summit at the Palazzo dei Conservatori in Rome on Saturday, March 25, 2017. EU leaders gather in Rome on Saturday to celebrate the 60th anniversary of the EU's founding treaty. (AP Photo/Andrew Medichini) (The Associated Press)

European Union leaders are gathering in Rome to mark the 60th anniversary of their founding treaty and chart a way ahead following the decision of Britain to leave the 28-nation bloc.

On a day of ceremonies Saturday, the 27 leaders are set to approve a Rome declaration to commit to a united future and see how to deal with the myriad crises which has beset them over the past decade.

It looks like the blueprint will be adopted without any problems after both Poland and Greece lifted their objections on the eve of the summit.

Britain says that it will trigger the negotiations to leave the bloc on March 29, only days after the summit.