Hillary Clinton

Sen. Cotton fires back at Clinton on Twitter over Iran nuke letter fallout

U.S. Secretary of State Hillary Clinton delivers remarks at the State Department in Washington September 12, 2012, on the deaths of U.S. embassy staff in Benghazi. REUTERS/Gary Cameron

U.S. Secretary of State Hillary Clinton delivers remarks at the State Department in Washington September 12, 2012, on the deaths of U.S. embassy staff in Benghazi. REUTERS/Gary Cameron

Republican Sen. Tom Cotton sparred Wednesday with Hillary Clinton on Twitter, after the former secretary of state slammed an open letter he and other GOP senators sent to Iran’s leaders about ongoing nuclear talks. 

The Republican senators’ statement has become the subject of immense controversy, as it challenged President Obama’s authority to strike a nuclear deal and cautioned Iran’s leaders that any agreement would need congressional approval in order to necessarily last beyond Obama’s term.

Clinton, who is widely expected to enter the presidential race in the coming months, tweeted a warning to those potential Republican candidates who have praised the letter.

GOP letter to Iranian clerics undermines American leadership. No one considering running for commander-in-chief should be signing on.