US Secretary of State Condoleezza Rice said in an interview broadcast Sunday that the United States is committed to pursuing a diplomatic solution to the Iranian nuclear crisis. Rice acknowledged widespread concerns that the standoff between the UN Security Council and Iran over its nuclear program could lead to the US taking pre-emptive military action, during an interview with Britain's ITV, recorded in Liverpool on Saturday. But she stressed "Iran is not Iraq. I know that's what's on people's minds. The circumstances are different," Rice said.