U.S. President Joe Biden arrived Wednesday, June 9 in Britain for a series of meetings with world leaders intent on stressing the message of his first foreign trip as president: "The United States is back."

"We're going to make it clear that the United States is back and democracies of the world are standing together to tackle the toughest challenges and the issues that matter most to our future," Biden said, speaking to U.S. Air Force personnel and their families stationed at Royal Air Force Mildenhall shortly after he landed, NBC News reports.

"Our alliances weren't built by coercion or maintained by threats. They're grounded in democratic ideals, a shared vision of the future, where every voice matters," he said.

Biden's remarks underscore his administration's efforts to use the Europe trip to re-establish America's place at the international negotiating table following President Donald Trump's isolationist approach to foreign policy, which frayed relationships with key U.S. allies.

Biden said that at the NATO summit in Brussels, he would make it clear that the U.S.'s commitment to Article 5 was "rock solid," calling it a "sacred obligation." Article 5, the cornerstone of the NATO alliance, says an attack against one ally should be treated as an attack against all members.

After the G-7 and NATO summits, Biden will meet with Russian President Vladimir Putin in Geneva, their first in-person meeting since Biden took office. Biden said he plans to "let him know what I want him to know."