Ukraine 's new Prime Minister Arseniy Yatsenyuk will also attend the meeting.
Ahead of the meeting, European Commission President Jose Manuel Barroso announced plans to provide EUR 11 billion to Ukrainer over the next couple of years.
On the eve of the summit, Grybauskaite said that Russia's military intervention into the Ukrainian territory is a threat to Europe's stability and security but, she noted, it is too soon to talk about sanctions against Russia.
