British Prime Minister Rishi Sunak praised his defence minister Ben Wallace as “fantastic” and admired around the world on Monday, suggesting he was firmly behind a bid for him to become secretary-general of the U.S.-led NATO military alliance.

Sunak will meet Joe Biden this week, the fourth meeting in as many months, and is expected to try to win the U.S. leader’s backing for the appointment of Wallace to NATO’s top job when it is due to come open at the end of September.