NATO leaders gather in Washington, D.C., for a significant summit marking the alliance's 75th anniversary. Top agenda items include the war in Ukraine, concerns over the upcoming U.S. presidential election's impact on NATO's future, and external threats from Russia, China, and conflicts like Israel-Hamas. There are worries about some members' commitment to defense obligations, with focus on President Biden's ability to lead amidst challenges and rising far-right populism in Europe. The summit aims to address these complex issues as NATO faces both internal and external challenges in a changing global landscape.