Mr. Cotton, a Republican, is a U.S. Senator from Arkansas, elected in 2014 ousting long term Democratic Sen Mark Pryor and a member of the Senate Banking and Intelligence committees.At age 37, he is the youngest current U.S. Senator.
Two essential requirements: congressional approval of any deal and new sanctions if the negotiations fail.

Anuclear-capable Iran is the gravest threat facing America today. The Obama administration’s nuclear negotiations with Iran, the so-called P5+1 talks, were supposed to stop Iran’s rush to a nuclear bomb. Regrettably, what began as an unwise gamble has descended into a dangerous series of unending concessions, which is why the time has come for Congress to act.

Our negotiating “partner,” Iran, is not a rational or peaceful actor; it is a radical, Islamist tyranny whose constitution explicitly calls for jihad. Iran’s ayatollahs have honored the call: Iran has been killing Americans for more than three decades.

In 1983 Iran helped finance and direct the bombing of the U.S. Embassy and Marine barracks in Beirut, killing hundreds of American military, diplomatic and intelligence personnel. Iran has also been implicated in the 1996 Khobar Tower bombings, which killed 19 American troops stationed in Saudi Arabia.