(JTA) — A plurality of Americans support the newly brokered deal with Iran, and half believe that the United States should defend Israel militarily, a new poll found.

Some 44 percent of Americans support the interim agreement on Iran‘s nuclear program reached between Iran and six world powers in Geneva last weekend, and 22 percent oppose it, a Reuters/Ipsos poll released Tuesday showed.

The survey also showed that 49 percent of Americans want the United States to increase sanctions if the Iran deal fails and 31 percent think it should pursue further diplomacy, according to Reuters. Twenty percent believe U.S. military force should be used against Iran.

The poll found that 63 percent of Americans believe that Iran’s nuclear program is developing a nuclear bomb. Iran says the project is for civilian purposes only.

Meanwhile, 65 percent of those polled said that that the United States “should not become involved in any military action in the Middle East unless America is directly threatened;” 21 percent disagreed with the statement.

Fifty percent of the Americans polled believe that the United States “should use its military power to defend Israel against threats to its security, no matter where they come from,” and 31 percent disagreed with the statement.

The poll of 591 Americans was conducted from Sunday through Tuesday with a margin of error of plus or minus 4.9 percentage points.

Meanwhile, State Department spokeswoman Jen Psaki told reporters Tuesday that the six-month interim agreement with Iran has not yet started, saying that the next step is “a continuation of technical discussions at a working level so that we can essentially tee up the implementation of the agreement.”

She said the U.S. is “respecting the spirit of the agreement in pressing for sanctions not to be put in place” and expects that the same is coming from Iran’s end.

Iran’s Foreign Minister Mohammad Javad Zarif told Iran’s Parliament on Wednesday that the Islamic Republic would continue to build the Arak heavy water plant, in contravention of the announced agreement. The previous day, Iran said that the United States had not distributed an accurate account of the agreement.