Most Americans want the United States to reach a deal with Iran and end the conflict as quickly as possible, according to a new poll that found broad support for diplomacy even as voters remain skeptical that any peace agreement will last.

The Economist/YouGov poll found 66% of Americans, 74% of Democrats, and 61% of Republicans believe the U.S. should make a deal to end the war with Iran as quickly as possible.

Americans are mixed about the peace agreement struck with Iran, with 32% supporting it, 24% opposing it, and 44% unsure. Republicans, 53%, are more likely to support the agreement than Democrats, 21%, and independents, 23%.

While most Americans, 69%, support Iran promising not to develop nuclear weapons and the U.S. and Iran negotiating the disposition of Iran's enriched uranium, only 23% support the U.S. and its partners developing a plan to provide Iran with $300 billion for reconstruction and economic development.

The poll found broad support, 69%, for reopening the Strait of Hormuz with toll-free commercial passage for 60 days.

Most Americans, 53%, think the U.S. should have insisted that Iran give up its missiles as part of any deal it strikes with the U.S.

Fifty-four percent are unsure whether the deal with Iran is good or bad for Israel. The remainder are divided, with 24% saying it is good for Israel and 22% saying it is bad.

Despite the agreement, 67% of Americans think Iran will attempt to develop nuclear weapons and only 16% expect that the Strait of Hormuz will remain open permanently.

Eighty-one percent of Americans, including 87% of Democrats and 75% of Republicans, say it is very or somewhat likely that negotiations with Iran will fail and the war will resume.

Americans remain mixed on who won the war, according to the poll, with 25% believing the U.S. won, 22% saying Iran won, and 41% believing neither side won.

Most Republicans, 54%, say the U.S. won, while only 7% of Democrats believe the U.S. won. Only 5% of Republicans believe Iran won, compared to 36% of Democrats.

Only 26% of Americans believe going to war was the right decision in hindsight, with 54% saying it was the wrong decision.

The poll of 1,679 Americans conducted June 19-22 has a margin of error of 3.3%.