North Korea warned on Aug. 14 it could respond with “a new level of deterrent” to upcoming joint U.S.-South Korea drills simulating battle against Pyongyang’s troops battle-hardened from deployment in the Russia-Ukraine war.

North Korea has threatened to exercise its right to self-defense in a statement that slammed the upcoming U.S.

North Korea on Friday denounced an upcoming joint military exercise between South Korea and the United States, warning it will respond to the drill...