mike pompeo, demanded the united states change its negotiation position, and offer north korea sanctions relief. the u.s. has said sanctions will remain until north korea dismantles its weapons programs. last month, president trump unexpectedly invited tim to meet him in the demilitarized zone between north and south korea. the two leaders agreed to resume discussions between officials. there has been difficulty getting the talks moving. in february, president trump and kim jong un failed to reach a broader agreement at their summit in hanoi. north korea has recently criticized planned u.s. south korean military drills, claiming they pose a threat to the north. last summer, president trump and kim agreed that the u.s. would suspend some of its military drills with south korea in exchange, north korea promised to halt testing its nuclear weapons and intercontinental ballistic missiles. north korea stuck to that pledge, firing only shorter range missile since last year. late 2017, the northwest testing achievement trigger