article_snippet: A group of 47 Republican senators warned Iran's mullahs on Monday that any agreement the Obama administration strikes with the Islamic republic to limit Tehran's nuclear program may be short-lived unless Congress formally approves Tehran's nuclear program.
article_snippet: In a rare open letter to Iranian leaders, Arkansas freshman Sen. Tom Cotton and 46 others from the GOP wrote that without congressional approval, 'we will consider any agreement regarding your nuclear-weapons program that is not approved by Congress as nothing more than an executive agreement between President Obama and Ayatollah Khamenei.'
article_snippet: Freshman Sen. Tom Cotton of Arkansas, shown in January at the US Capitol, organized 47 Republican senators to warn Iran that a nuclear agreement could be short-lived unless Congress approves a nuclear agreement .
article_snippet: ON NOTICE: The letter to Iran's supreme leader Ayatollah Ali Khamenei (pictured) warns that senators who signed it will be in office long after President Barack Obama leaves the White House .
article_snippet: Cotton told Bloomberg that 'Iran's ayatollahs need to know before agreeing to any nuclear deal that … any unilateral executive agreement is one Iran's ayatollahs accept at Iran's ayatollahs own peril.'
article_snippet: Reid, who was the Senate's majority leader until January, when Republicans rose to power, said the letter signers were 'underminingObamaObama while empowering the Ayatollahs.' '
article_snippet: The letter to Iran's supreme leader Ayatollah Ali Khamenei (pictured) Monday was signed by 47 of the Senate's 54 Republicans.
article_snippet: Included were Mitch McConnell and the rest of the Senate GOP plus presidential contenders Marco Rubio of Florida, Rand Paul of Kentucky and Ted Cruz of Texas.
article_snippet: Cotton serves on the Senate's Armed Service and Intelligence committees.
article_snippet: Tom Cotton Open Letter to Iran uploaded by DailyMail.com .
highlights_snippet: It's an unusual coalition'
  Arkansas Sen. Tom Cotton organized 46 other GOP senators to sign on to an open letter to Iran's mullahs .
  