CNN)The United States and China have reached an agreement on a new U.N

CNN)The United States and China have reached an agreement on a new U.N. Security Council draft resolution aimed at punishing North Korea in the wake of its recent nuclear test and for violating previous resolutions, a Security Council diplomat told CNN on Wednesday

The resolution is going to be described as the toughest yet on Pyongyang

The text of the draft is not yet available but the document will likely be voted in by the full Security Council "in a couple of days," once other nations have an opportunity to weigh in on the language, according to the diplomat

"There were a significant number of blockage points between the (United States and China) ... but there is an agreement between those two countries," the diplomat said

In January, Pyongyang claimed to have successfully tested a hydrogen bomb in its fourth nuclear test

U.S. officials were initially skeptical of the claim, but later assessed that there may have been a partial, failed test of some type of components associated with a hydrogen bomb

Then on February 7, Pyongyang said it had successfully launched an Earth satellite into orbit via the long-range Kwangmyongsong carrier rocket. Both the test and the launch were carried out in defiance of international sanctions

Also Wednesday, National Security Adviser Susan Rice met with Chinese Foreign Minister Wang Yi at the White House

They agreed "on the importance of a strong and united international response to North Korea’s provocations, including through a U.N. Security Council Resolution that goes beyond previous resolutions," read a statement from National Security Council spokesman Ned Price. "They agreed that they will not accept North Korea as a nuclear weapons state."