In a letter sent Monday, Juncker backed Slovenia's proposal for EU support to reinforce the FYROM border with Greece to stem the northward flow of migrants. Under this plan, most migrants who got to Greece would stay in place, taking pressure off transfer countries but eventually also from Austria and Germany.

A search was underway for around 20 people listed as missing after the latest tragedy involving migrant boats crossing the Aegean Sea from Turkey to Greece.

Kyriakos Mitsotakis scored an upset win in Sunday’s run-off ballot for the leadership of Greece’s opposition New Democracy, defeating the centre-right party’s interim leader by a clear-cut margin, the Financial Times report.