Zelenskyy says "historic" deal to buy advanced Rafale fighter jets from France will give Ukraine some of the "greatest air defense" in the world against Russian attacks.

France is touting a sweeping plan to reinforce Ukraine’s air power over the next decade with new jet fighters and missile defense systems, but a major question remains unsettled: Who will pay for it?

"It will be the greatest air defence, one of the greatest in the world," Zelenskiy told reporters at the event at France's Villacoublay military airport.