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U.S. Democratic Presidential candidate Hillary Clinton likely will have to defend her position on the Iran nuclear deal during the course of the campaign. She is pictured here posing for a group photo with Senate pages on Capitol Hill in Washington, July 14, 2015. REUTERS/Yuri Gripas

Hillary Rodham Clinton has been a steady supporter of President Obama’s nuclear negotiations with Iran. However, Republican presidential candidates are likely to attack their Democratic counterpart on her position.

Clinton has supported Obama’s efforts to strike a nuclear deal with the Islamic Republic. Reports have said received regular briefings about the progress of the negotiations.

Clinton said Tuesday the nuclear deal would require vigorous and relentless enforcement. "As president, I would be absolutely devoted to assuring the agreement is followed," ABC News quoted the former U.S. secretary of state as saying. Clinton said Obama called her Monday night and informed her about the conclusion of the nuclear negotiations.

Republican presidential candidates, on the other hand, warned the Iran deal would cause disorder in the Middle East. They asked the U.S. Congress to prevent the deal from being implemented, if possible. They also hinted Clinton would need to defend her stance on the issue during the election campaign.

Wisconsin Gov. Scott Walker said history would remember the Iran deal as “one of America's worst diplomatic failures." Former Florida Gov. Jeb Bush said the deal was not diplomacy but “appeasement.” Florida Sen. Marco Rubio said the Iran deal undermined the national security of the United States.

According to a recent Associated Press-GfK poll, 56 percent U.S. citizens consider Iran an enemy of the United States.