SEOUL, South Korea (AP) — South Korea has dismissed North Korean proposals to reduce tensions, including the cancellation of South Korean military drills with the U.S., calling them insincere.

North Korea’s powerful National Defense Commission made the proposals Monday, describing the planned drills as a rehearsal for invasion. It also suggested that the two Koreas halt hostile military acts against each other at border areas and stop psychological warfare. South Korea and the U.S. deny that they seek to invade the North.

Seoul’s Unification Ministry said Tuesday that North Korea must first demonstrate that it is serious about nuclear disarmament if it truly wants peace.

The ministry accused North Korea of breaking an earlier agreement to stop mutual slander.

Analysts say North Korea wants better ties with South Korea to help revive its stagnant economy.