Ankara asks for extra $3.3 billion in aid and visa-free travel for its citizens to 28-nation bloc

European Union leaders on Monday hailed a "breakthrough" in talks with Turkey on a deal to curb the migrant crisis, but a final decision has been delayed until a summit next week to flesh out the details of Ankara's new demands.

Turkish Prime Minister Ahmet Davutoglu stunned his 28 EU counterparts in Brussels when he suddenly asked for an extra $3.3 billion in aid and visa-free travel for Turks to the bloc by June.