Compare and contrast. In the New York Times, Senator Ted Cruz whips up the fear regarding the nuclear deal between the United States and Iran:

The mullahs’ policy is, by their own admission, unchanged. It is the same one that inspired the so-called revolutionaries of 1979 to take 52 Americans as hostages for 444 days, and motivated murderous attacks on Israelis and Americans from Buenos Aires to Beirut to Baghdad over the subsequent decades. The only thing that is changing now is the potential scale of this violence, as they seek to replace truck bombs and roadside explosive devices with the most destructive weapons on the planet and the means to deliver them.

In the Boston Globe, Stephen Kinzer writes that what hardliners in both countries really fear is that the nuclear deal might actually work:

Extremists in the United States and Iran have joined to derail this 10-month-old deal. They share a horror scenario: an Iran that is successfully integrated into the Middle East and the wider world, increasingly free at home and responsible in its neighborhood. Militants in Washington fear that this would give Iran a regional role commensurate with its history, size, and power, while they wish to see it tied down forever. Militants in Tehran fear that cooperating with the outside world will erode their authority and possibly lead to collapse of the Islamic Republic. These are reasonable fears.