Obama takes on Iran critics on Twitter
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President Obama hit back at Republican opponents of his Iran nuclear deal via Twitter on Wednesday.

The president denied suggestions there are secret terms to the deal that haven't been shared with Congress and said rejecting the agreement would bolster Iran's nuclear program.

“Important detail — there are no secret deals,” Obama wrote about the agreement, responding to a tweet from House Majority Whip Steve ScaliseStephen (Steve) Joseph ScaliseTrump keeps tight grip on GOP GOP lawmakers: House leaders already jockeying for leadership contests House Republicans find silver lining in minority MORE (R-La.).

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“My staff can brief you on any question about any part of the deal,” he added.

“Mr. President, Americans deserve to know the details about the secret side deals,” Scalise had tweeted earlier Wednesday morning with the hashtag #IranDeal.

Obama also addressed Senate Majority Leader Mitch McConnellAddison (Mitch) Mitchell McConnellGOP rep to introduce constitutional amendment to limit Supreme Court seats to 9 The Hill's Morning Report - Dems contemplate big election and court reforms Court-packing becomes new litmus test on left MORE (R-Ky.) and his remarks criticizing the deal.

“The choice is ultimately between diplomacy and war,” Obama wrote. “Iran’s nuclear program accelerates if Congress kills this deal."

“Let’s hope @POTUS avoids obviously untrue talking points about the #IranDeal being a choice between a bad deal and war,” McConnell tweeted on Wednesday morning. “It isn’t.”

Obama also responded to a tweet from Angela K. Miller, a self-described "peace advocate."

Miller asked Obama on Twitter if a “better” deal were possible.

“It’s the strongest nuclear deal ever negotiated,” Obama tweeted.

“There’s no such thing as a ‘better deal,’” he added. “Walking away risks war.”

Obama’s push on social media for the Iran deal follows a speech he delivered at American University in Washington, D.C., Wednesday morning.

In the speech he told lawmakers that the agreement is the best method for preventing an Iranian nuclear weapons stockpile.

“Walk away from this agreement, and you will get a better deal — for Iran,” Obama said.

“America’s credibility is the anchor of the international system,” the president added.

Obama is ramping up efforts to win over lawmakers as they begin a five-week August recess. Congress is currently within a 60-day window to review the pact, with Republicans planning to vote on a resolution of disapproval in September.

The president needs to shore up Democratic support to sustain his threatened veto of any measure blocking the nuclear deal.

The historic agreement would ease economic sanctions on Iran in exchange for greater restrictions over its nuclear energy programs.