President Volodymyr Zelensky has said he understands that Ukraine cannot become a member of NATO while it is still at war.
"We understand we will not be a NATO member, while the war is waging. Not because we don't want [that], but because it's impossible," he said at a news conference in Kyiv.
The alliance's treaty includes Article 5, a collective defense provision that pledges members to come to the assistance of any state that is under attack.
"Give me an example of one NATO country which is in a state of war with Russia right now; or which NATO country has Russian troops on its territory," Zelensky said.