Early Saturday morning, some 48 hours after Russian military forces pushed into his country, Ukrainian President Volodymyr Zelenskyy put in a call from Kyiv to Brussels with a plea for military assistance.

During the Feb. 26 phone call with the head of the European Council, the body that represents the European Union’s member states, Zelenskyy provided an update on Russia’s advance. He said he was proud of his country’s efforts to stem the blitz so far, but that he was worried about a dwindling supply of arms, according to a senior European Union official.

Zelenskyy’s message, according to the senior official: Can you help us with weapons? Can you coordinate EU offers?