NATO leaders arrived in Lithuania for their annual summit on Tuesday, bolstered by Turkey's abrupt reversal to clear the path for Sweden to join the alliance. The move set the stage for the group to demonstrate a unified front in supporting Ukraine against Russia's invasion.
Follow our updates on the war in Ukraine.
Jens Stoltenberg, the NATO secretary general, said negotiations to supply Turkey with U.S.-made F-16 fighter jets were "a part of the agreement we reached yesterday" to allow Sweden to join the military alliance.
NATO is central to the war in Ukraine even though the country is not a member. Here's what to know about the alliance.