Last month, US Director of National Intelligence Dan Coats told Congress he believed it was unlikely North Korea would give up all its nuclear weapons and that it had continued activity inconsistent with pledges to denuclearize.
North and South Korea are pressing ahead with a joint bid to host to 2032 summer Olympic Games in a new sign of the unprecedented improvement in relations between the two countries. Since the summit, Pyongyang has not tested any nuclear weapons or ballistic missiles.
The White House declined comment on Davidson's remarks.
Davidson said tensions with North Korea had declined since it halted nuclear and missile testing in 2017 and that it had taken some denuclearization steps, most notably the destruction of tunnels at it nuclear test site. Richard Blumenthal of CT said the first meeting led to "a stark and stunning lack of any action [or] progress".
South Korea has signed a new deal with the United States on how much Seoul should pay for the U.S. military presence on its soil after a previous deal lapsed amid President Donald Trump's call for Seoul to pay more.
The Prime Minister said this when responding to a question whether Malaysia viewed the second summit between United States and North Korean leaders as a positive development to reopen its embassy in North Korea.
South Korean officials have said they had sought to limit its burden to 1 trillion won ($889.7m) and make the accord valid for at least three years.
"With only two weeks until the summit, it will be hard to resolve all the tricky issues, but there's a chance if we can agree on a timeline (for denuclearization)", a South Korean delegation member quoted Biegun as saying.
"The United States government realises that South Korea does a lot for our alliance and for peace and stability in this region", said Betts.
US Secretary of State Mike Pompeo said during a visit to Slovakia on Tuesday he hoped for "substantial progress" in Hanoi. Most U.S. troops were withdrawn in 1949 but they returned the next year to fight alongside South Korea in the 1950-53 Korean War.
Stanford University's Center for International Security and Cooperation reports that the volume of fissile material produced by the Yongbyon Nuclear Scientific Research Center North Korea is sufficient to enable growth in the number of nuclear warheads in the North Korean arsenal.
Trump has touted an optimistic view of North Korea - once proclaiming it was no longer a threat - since his first meeting with Kim.