President Donald Trump castigated one of the United States’ closest allies on Tuesday, comparing Prime Minister Keir Starmer unfavorably to Winston Churchill over Britain’s limited support for U.S. strikes on Iran.

“This is not Winston Churchill that we’re dealing with,” Trump said at the White House, referencing Starmer’s legendary World War II predecessor.

The Oval Office comments were Trump’s third broadside against Starmer this week as Washington’s campaign of airstrikes against Iran stoked concerns among some U.S. partners who see the war as reckless and a violation of international law.