North Korea is optimistic that the U.S. will bring the “right calculation method” to upcoming working-level talks, the country’s new chief negotiator said in a statement on Friday.

The comments, delivered by the foreign ministry’s “roving ambassador” Kim Myong Gil, come in response to remarks by U.S. President Donald Trump on Thursday in which he expressed an openness to embracing a “new method” in nuclear negotiations with the North.

Those remarks also saw Trump distance himself from his former National Security Advisor John Bolton, who he had previously criticized for proposing