Leaders at the NATO Summit in Vilnius, Lithuania are celebrating a major win as Turkey agrees to Sweden's bid to join the alliance. This decision comes after Turkish President Recep Tayyip Erdogan had blocked Sweden's accession bid for more than a year. The announcement, which came just hours after President Joe Biden landed in Vilnius, marks a stunning about-face for Erdogan. The move provides leaders with a significant show of force going into the summit and reinforces the unity among alliance members in the face of Russia's aggression in Ukraine.

However, it should be noted that Sweden will not join the alliance immediately. The approval of their membership requires a parliamentary procedure in Turkey and Hungary dropping their objections, which is expected to happen now that Erdogan is on board. Biden has called for "swift ratification" following the agreement.

In addition to Sweden's bid, leaders will also discuss Ukraine's potential pathway to joining NATO and the possibility of additional security assistance. President Volodymyr Zelensky is expected to attend the summit and hold an in-person meeting with Biden to address these matters. The war in Ukraine and Russia's invasion are top agenda items for NATO leaders.

Overall, Turkey's agreement to allow Sweden to join NATO marks a significant development in the alliance's efforts to counter Russian aggression and maintain unity among its members.