President Joe Biden on Wednesday will host newly elected British Prime Minister Keir Starmer at the White House for a meeting, their first since the Labour leader was swept into power in a landslide victory in the United Kingdom’s election last week.

The news was first announced by National Security Council spokesperson John Kirby at a briefing at the White House on Monday. The meeting will come as NATO leaders are set to descend on Washington for a summit marking the 75th anniversary of the landmark alliance.

“President Biden looks forward to his first meeting with Prime Minister Starmer and will underscore the importance of continuing to strengthen the special relationship between the United States and the United Kingdom,” press secretary Karine Jean-Pierre said in a statement.

The two leaders are set to discuss support for Ukraine in its war against Russia, reaching a cease-fire and hostage release deal between Israel and Hamas in Gaza, working to confront Iran’s nuclear threat and the Tehran-backed Houthi rebels and their attacks on commercial shipping in the Red Sea, among other issues.

Starmer released a video over the weekend of Biden calling him to congratulate him on “a hell of a victory” in last week’s election, which saw his center-left Labour Party deliver a shellacking to the Conservatives, snapping their 14-year hold on power in the United States’ closest ally. The Labour Party racked up 411 seats in Parliament in a landslide victory to deliver them their first general election victory since 2005, with ex-Prime Minister Rishi Sunak’s Conservative Party losing 251 seats, including those belonging to former Prime Minister Liz Truss and a dozen Cabinet ministers.

Starmer said on the call that he was looking forward to seeing Biden at the NATO summit in Washington “and having the opportunity, obviously, to sit down properly.”

“I’m looking forward to it as well,” Biden said. “There’s no doubt that under your leadership, our two countries are going to continue our special relationship. We’re working together on just about every issue — supporting Ukraine, managing the competition with China, advancing cooperation in the Indo-Pacific with AUKUS (trilateral security partnership for the Indo-Pacific region between Australia, the United Kingdom, and the United States).”

Starmer called the “special relationship” between the two countries “the bedrock … for our defense, for our security and prosperity.”

The summit comes at a critical time not only on the international stage, but for Biden’s reelection prospects after his debate performance against former President Donald Trump. The president will no doubt be closely watched at the summit, including at a press conference on Thursday, to quell doubts from within his own party about his ability to lead.

The prospect of Trump’s possible return to the White House has also sparked alarm among some European allies, with the prospect that the Republican ex-president could diminish the United States’ contributions to the alliance or withdraw the country completely.

In addition to this week’s summit being Starmer’s first since being named prime minister, it will also be Sweden’s first since joining the alliance, the first since French voters quelled a far-right surge in its recent legislative elections, and the last summit for Jens Stoltenberg as the alliance’s leader. Former Dutch Prime Minister Mark Rutte will take over for Stoltenberg in the fall.