The U.S., South Korea and Japan conducted their first-ever joint aerial drill near the Korean Peninsula on Sunday, with an American nuclear bomber joining the exercise aimed at reinforcing their ability to counter North Korea.

The joint trilateral aerial exercise comes two months after the leaders of the three countries met at Camp David and vowed to bolster cooperation in military and security sectors, including regularly holding trilateral drills. 

“The exercise was planned to implement the defense sector agreements made at the ROK-U.S.-Japan Camp David summit in August, and expand the three countries’ ability to respond to North Korea’s escalating