[Date], Washington (AP) - NATO leaders are convening in Washington to address the ongoing conflict between Ukraine and Russia, with President Joe Biden using the summit as an opportunity to demonstrate his capabilities for another term in office. The event is set to commence at 5 p.m. ET.

Amidst concerns of a potential return of NATO skeptic Donald Trump, European and North American heads of state are grappling with the implications on transatlantic relations. Biden's reelection campaign has faced hurdles following a disastrous debate performance against Trump on June 27.

Biden highlighted his role in rallying NATO members to respond firmly to Russia's invasion of Ukraine, citing it as an example of his steadfast leadership. In an interview with MSNBC on Monday, he emphasized the importance of U.S. leadership in the face of global challenges posed by China and Russia.

However, skepticism from some allies, as well as calls from Democratic House members for Biden to step aside from the campaign, have raised concerns about his viability in the race. The White House aims to showcase Biden's capabilities during the summit to assuage doubts within his own party.

Throughout the summit, which marks 75 years of NATO's existence, Biden will engage in formal meetings, sideline discussions with leaders, diplomatic dinners, receptions, and conclude with a press conference. Anonymous senior administration officials acknowledged Biden's comprehension of broader issues but raised concerns about specific and incremental actions to address conflicts with Russia and China.

German Chancellor Olaf Scholz expressed confidence in Biden's health and preparation for the summit. The event will also provide an opportunity for Biden to meet British Prime Minister Keir Starmer, who had no concerns about Biden's mental acuity during their recent phone call.

As one of Biden's final international appearances ahead of the upcoming election, the summit highlights his commitment to NATO and serves as a contrast to Trump's criticism of NATO members who fail to meet defense spending targets. Biden's team has pushed back on Trump's accusations, noting that 23 member nations are meeting the alliance's defense spending goal this year.

Biden's expansion of NATO, with Finland and Sweden joining after Russia's invasion of Ukraine in February 2022, is credited to his leadership and stewardship of alliances. The summit is expected to unveil details regarding Ukraine's pathway to NATO membership and discuss efforts to establish a coordination center in Germany for training and equipping Ukrainian forces.

Ian Brzezinski, a senior fellow at the Atlantic Council, emphasizes the importance for Biden to use the summit as an opportunity to reverse the perception left by his poor debate performance. It offers a chance to reaffirm his commitment to NATO and showcase the resolve that has made the alliance successful.

In conclusion, the NATO summit in Washington serves as a platform for Biden to consolidate transatlantic support for Ukraine while addressing concerns about his reelection campaign. Biden's leadership and alliance-building efforts will be on display as the summit addresses key challenges, including Russia's aggression and China's increasing influence.