Long-time hawk and critic of President Trump Republican Mitch McConnell has announced that he would not seek re-election to the U.S. Senate.

The perennial incumbent from Kentucky, who consistently opposed what he saw as “isolationism” in the Republican party, was first elected in 1984 and has represented his home state ever since. He is up for reelection in 2026.

McConnell was and is a regular voice of opposition to what he calls the “isolationist movement” in the Republican Party. A long-time supporter of American extension overseas, McConnell supported Buch’s 2002 Iraq War Resolution, as well as further troop surges to the country. Historically, he was hawkish toward Russia as well. He opposed the 2010 ratification of the New Start nuclear reduction treaty between Washington and Moscow, consistently supported sanctions, and worked with Democratic Senate leader Chuck Schumer to send additional aid to Ukraine in 2024.

McConnell has long invited public clashes with President Trump, particularly recently over the Ukraine War. McConnell still supports aid to the country, while Trump previously threatened to cut aid. He also voted against some of Trump’s key appointments, notably Tulsi Gabbard for Director of National Intelligence and Pete Hegseth as Secretary of the Department of Defense.

After announcing his departure from party leadership in 2024, McConnell warned against “right-wing flirtation with isolation and decline.”

“Standing up to China will require Trump to reject the myopic advice that he prioritize that challenge by abandoning Ukraine,” remarked McConnell. “A Russian victory would not only damage the United States’ interest in European security and increase U.S. military requirements in Europe; it would also compound the threats from China, Iran, and North Korea.”

He also criticized Trump’s diplomatic style, saying that “Trump sometimes undermined these tough policies through his words and deeds. He courted Putin, he treated allies and alliance commitments erratically and sometimes with hostility,” concluding that “these public episodes raised doubts about whether the United States was committed to standing up to Russian aggression, even when it actually did so.”

McConnell is not only the longest-serving sitting senator but also the longest-serving Senate party leader in the United States. He became Minority Leader in 2007 and led the Senate GOP until 2024. During his last term, the 83-year-old struggled with regular health problems, including repeated falls and extended “freezes” during press briefings and conferences.

McConnell vowed to reject calls to “give up on American primacy” and to continue fighting what he described as isolationism in the GOP.