US President Joe Biden said he doesn't think the war in Ukraine will drag on for years to come, declaring that Russian President Vladimir Putin has "already lost."

"There is no possibility of him winning the war in Ukraine. He has already lost that war," Biden said at a news conference with Finnish President Sauli Niinisto in Helsinki when asked if Ukraine not immediately being admitted to join NATO could embolden Putin.

The US president said he doesn't think the war will continue for years because Russia cannot maintain its resources for that long, and Putin will likely eventually "decide its not in interest for Russia, economically, politically or otherwise."

He said he hopes Ukraine makes progress in its current counteroffensive to spur a negotiated settlement.