US President Barak Obama signed sanctions against North Korea to impose limitations to its recent nuclear tests and rocket launch.
Thus, US will tighten sanctions on any import of goods or technology related to weapons and mass destruction into North Korea.
"The administration is deeply concerned about North Korea's actions and their recent provocations," said White House spokesman Josh Earnest said to foreign media adding that they hope “the sanctions will serve to increase pressure on North Korea. That is a goal that Congress stated and it's a goal that we share."North Korea, under the leadership of Kim Jong-Un, last month announced they had successfully tested a hydrogen bomb. The announcement sparked global reproach and dialogues.