Following an agreement on nuclear verification measures, Washington removed North Korea from its list of countries sponsoring terrorism. The move follows frantic negotiations between US officials and fellow members of the six-party group.
The United States will maintain North Korea on its "rogue state" blacklist, judging the communist state's declaration on its nuclear program insufficient. Washington urged Pyongyang to accept a comprehensive verification mechanism.
The EU has imposed fresh sanctions against Iran for its nebulous nuclear activities in line with a UN Security Council resolution, amid diplomatic wrangling over the exact purpose of the Islamic state's uranium enrichment program.
Negotiators from six world powers will hold a conference call to decide on whether to impose fresh sanctions on Iran in reaction to its ambiguous response to their "incentives" for halting the country's nuclear enrichment programme.
All six powers currently holding nuclear talks with Iran, including China and Russia, will push for new sanctions against the country if it refuses their offer of incentives in exchange for halting uranium enrichment.