U.S. Ambassador William Hagerty will leave his post to run for the Senate, President Donald Trump tweeted late Friday from Washington, garnering a ¡°Complete & Total Endorsement¡± from the American leader.

¡°Tennessee loving Bill Hagerty, who was my Tennessee Victo(r)y Chair and is now the very outstanding Ambassador to Japan, will be running for the U.S. Senate,¡± Trump tweeted. ¡°He is strong on crime, borders & our 2nd A. Loves our Military & our Vets. Has my Complete & Total Endorsement!¡±

The announcement, which could not immediately be confirmed by Hagerty¡¯s office, comes at a time when Japan, a top U.S. ally, is embroiled in a heated trade and history-related row with South Korea, another key American partner in the region.