Their emergency meeting, by video link, will also examine additional EU sanctions announced overnight by European Commission chief Ursula von der Leyen.

They include cutting certain Russian banks out of the global SWIFT network, harming their ability to do crossborder transfers, and blocking the Russian central bank's access to its reserves.

"Today's discussion by EU Foreign Ministers will pave the way for the swift adoption of all necessary legal acts," said a statement from Borrell's office.

Borrell "will propose to provide a measure composed of lethal equipment, such as ammunition, and a measure for non-lethal equipment and supplies to the Ukrainian army, such as fuel and urgent medical supplies," it said.

The foreign ministers' meeting was to begin at 1700 GMT, with Borrell expected to give a media conference afterwards at 1900 GMT.

It was to be preceded by another emergency meeting of EU interior ministers, gathered in-person at 1400 GMT in Brussels.

They will discuss Europe's humanitarian response to the conflict in Ukraine, notably on taking in the hundreds of thousands of refugees flowing out of the country to escape the Russian assault.