Nearly half of likely voters think the United States should be willing to use military force to prevent Iran from obtaining a nuclear weapon, and that the U.S. should help Israel if it attacks Iran.

According to this week’s The Hill Poll, 49 percent said military force should be used to prevent Iran from acquiring nuclear weapons, while 31 percent said it should not. Twenty percent were not sure.

Sixty-two percent of likely voters said they were somewhat or very concerned about the possibility Iran would carry out a terrorist strike on the U.S., while 37 percent said they were not very concerned or not at all concerned about it.

The Rasmussen polling agency found that 48 percent of likely voters said that if Israel attacks Iran, the U.S. should help Israel.

"Voters nationwide remain firmly convinced that Iran is likely to develop a nuclear weapon in the near future, and if so, will use it against Israel," said Rasmussen. "At the same time, most also think an Israeli attack on Iran is likely to happen within the next year."

The survey of likely U.S. voters shows that 83 percent believe it is at least somewhat likely Iran will develop a nuclear weapon in the near future, including 5 percent who say that is very likely to happen. Only 11 percent say it’s not very likely or not at all likely that Iran will develop a nuclear weapon soon.

In a Rasmussen poll from November, 38 percent favored U.S. military action if diplomacy fails to stop Iran's nuclear program, while 35 percent opposed such action.