US Vice President Joe Biden said on Sunday that the United States had made "significant progress" in addressing Iran's nuclear program.
But former Vice President Dick Cheney said that he's not yet persuaded that the Obama administration will do what's necessary to keep Iran from getting nuclear weapons.
Biden said the US has wide support for further UN sanctions against Iran — and he thinks China, too, will come on board. He also said that Iran had made less progress on the nuclear front than claimed.
Cheney said it's good to keep a military option on the table to "give any kind of meaning at all to negotiations over sanctions."