(JTA) — China will join efforts to sanction Iran, U.S. officials said. Obama administration officials announced the breakthrough Monday during a summit in Washington on containing the threat of nuclear terrorism. Ben Rhodes, a deputy national security adviser to the White House, said a new set of U.N. Security Council sanctions would be ready within “a matter of weeks.”

The announcements came after President Obama met with Chinese President Hu Jintao.

China, one of five veto-wielding members of the Security Council, was the final holdout. It’s not clear how strong sanctions approved by China would be; China remains one of Iran’s major trading partners, particularly in the energy sector.

U.S. officials have spoken of expanding the the existing Security Council list of individuals and entities subject to international financial and travel sanctions, and of targeting Iran’s banks.

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