STORY: Addressing a NATO summit in Brussels, Zelenskiy said Ukraine needed fighter jets, tanks, anti-ship weapons and improved air defense to repel Russian troops as the war enters its second month.

While NATO is expected to step up support for Ukraine, NATO Secretary General Jens Stoltenberg has said the alliance will not send troops or planes to Ukraine.

Zelenskiy said he was grateful for the support Ukraine had received from individual NATO member states.

"But NATO has yet to show what the alliance can do to save people," he said. "It feels like we're in the grey zone between the West and Russia, but we're protecting all our and your shared values."