European Council President Donald Tusk said the Ukraine crisis would be the topic on every EU leader's mind prior to coming for an informal summit meeting here Thursday.

"Clearly, the Ukrainian question is at the center of our attention because it doesn't only concern our solidarity with the victims but, in the long term, it also concerns the whole geopolitical order in Europe after 1989," Tusk said ahead of the summit meeting.

Referring to the ceasefire deal struck Thursday in Belarus between Ukrainian, French, German and Russian heads of state, Tusk said, "Today's agreement in Minsk is welcome news and gives hope. Hope is good, even essential, but not enough. The real test is the respect of the ceasefire on the ground."

In addition to the situation in Ukraine, other topics of pressing interest, including combating terrorism, the euro, and the Greek bailout, will also top the summit's agenda. Endit