Europe Refugee Crisis: EU’s Tusk Says Turkey Must ‘Play By The Rules’ Agreed Under Migration Deal

European Council President Donald Tusk said Tuesday that Ankara should not seek to change the rules agreed upon in the controversial EU-Turkey deal. Tusk's comments came as doubts lingered over the deal after Ankara threatened to walk out of negotiations if the EU did not ease travel rules for its citizens.

"The EU stands ready to fulfil its part of EU-Turkey deal as long as Turkey agrees to play by the rules, and not with the rules," Tusk said on Twitter.