U.S. Defense Secretary Robert Gates is calling on the international community to rally together to pressure Iran into abandoning its nuclear program.

Gates, who's in Rome as part of a weeklong European trip, told reporters Sunday that if the international community stands together to bring pressure on Iran he believes there's still time for sanctions to work.

When asked what type of sanctions would be most effective, Gates declined to be specific. He says the focus should be on putting pressure on the Iranian government and not hurting the people.