Ahead of the eagerly awaited U.S.-N. Korea summit in Vietnam, President Donald Trump said he is happy as long as Pyongyang refrains from weapons testing.

The brisk peace process on the Korean Peninsula entered “a new, higher stage” on Monday as the two Koreas agreed to begin reconnecting their rail and road links that have been cut since the 1950-53 Korean War.

The North Korean leader is ready to allow international inspectors into his nuclear and missile testing sites.

A day after North Korea’s leader Kim Jong-un announced his willingness to shut down a key missile launch site, U.S. Secretary of State Mike Pompeo said Washington is ready to resume negotiations with Pyongyang.

In a “leap forward” N. Korea’s Kim Jong-un has agreed to permanently shut down a key facility for testing and launching missiles if the U.S. takes “reciprocal measures,” said the South’s President Moon Jae-in.