The Obama administration says it’s moving forward with a new round of sanctions against Iran. At a White House news conference, President Obama criticized Iran for shunning a fuel-swap proposal and said international support is growing for sanctions.

President Obama: “We are confident right now that the international community is unified around Iran’s misbehavior in this area. How China operates at the Security Council as we pursue sanctions is something that we’re going to have to see. One thing I’m pleased about is to see how forward leaning the Russians have been on this issue.”

Iran says the US and other world leaders are at fault for the stalled fuel-swap proposal. The Washington Post, meanwhile, reports the Obama administration is preparing a new offer that would assist Iran in buying medical isotopes on the international market instead of operating a reactor.