Over the past decade, the US assessment of nuclear weapons security in Pakistan appears to have changed considerably from confidence to concern, particularly as a result of the introduction of tactical nuclear weapons, the report said.
"The issue of denuclearisation of the Korean Peninsula can be resolved, if South Korea and the United States respond to our efforts with goodwill," Kim told Chinese officials during a visit this week, according to Chinese state media outlet Xinhua.
"They are close enough now in their capabilities that from a US policy perspective we ought to behave as if we are on the cusp of them achieving'' their objective of being able to strike the United States, Pompeo told a national security forum in Washington.
"In North Korea, our goal is denuclearisation. We cannot allow this dictatorship to threaten our nation or our allies with unimaginable loss of life. We will do what we must do to prevent that from happening. It will be done, if necessary -believe me," he said.