U.S. President Joe Biden is ticking off his administration’s to-do list for shoring up America’s alliances in Asia.

On Sunday, the U.S. State Department announced that Washington and Seoul had reached a tentative deal on a “meaningful increase” in cost-sharing for hosting American troops in South Korea, less than a month after concluding a one-year deal with Japan.

The breakthrough was expected to impact ongoing U.S. talks on a longer-term agreement with Tokyo.