The U.S. is urging continued worldwide pressure on North Korea to force it to renounce its nuclear arms.

The demand at the 35-nation board meeting of the International Atomic Energy Agency comes after the agency cited satellite imagery indicating that Pyongyang is "further developing its nuclear capabilities."

Chief U.S. IAEA delegate Henry S. Ensher told the meeting Wednesday that "enhanced pressure remains essential to compel North Korea to correct course."

Beside Iran, the agency is also trying to keep tabs on North Korea, where it has had no presence since the country told its inspectors to leave after withdrawing from the Nuclear Nonproliferation treaty 12 years ago. Since then, Pyongyang has test-exploded three nuclear weapons.