Joe Biden stumbled up the steps of Air Force 1 as he made his way onto the aircraft to leave Poland.<br /><br />It happened after he delivered a speech to the Polish public in Warsaw, where he thanked them for housing Ukrainian refugees.<br /><br />This video shows the moment the president lost his footing as he ascended the steps, before composing himself and proceeding.<br /><br />He can be seen turning around and giving a brief wave before entering the plane.
