US sanctions 2 North Korean missile experts; Russia offers to mediate in nuclear crisis

North Korean leader Kim Jong Un inspects the intermediate-range ballistic missile Pukguksong-2's launch test with Kim Jong Sik (second, left), Ri Pyong Chol (third, left) in this undated photo released by KCNA, on May 12, 2017.
North Korean leader Kim Jong Un inspects the intermediate-range ballistic missile Pukguksong-2's launch test with Kim Jong Sik (second, left), Ri Pyong Chol (third, left) in this undated photo released by KCNA, on May 12, 2017.PHOTO: REUTERS
US Treasury Secretary Steven Mnuchin stands with Chairman on the National Economic Advisory Gary Cohn and Commerce Secretary Wilbur Ross on the South Lawn of the White House in Washington, US on Dec 20, 2017.
US Treasury Secretary Steven Mnuchin stands with Chairman on the National Economic Advisory Gary Cohn and Commerce Secretary Wilbur Ross on the South Lawn of the White House in Washington, US on Dec 20, 2017. PHOTO: REUTERS