For decades, the Iranian regime has repeatedly declared itself an enemy of America, openly acting in violence against our citizens. We’ve known it since the clerics and their supporters took our embassy staff hostage in 1979. We’ve known it in the form of multiple Tehran-backed attacks on Americans since: 1983 in Beirut where we lost 241 people in a bombing; 1985 when TWA 847 was hijacked by Iranian-trained Hezbollah fighters and we lost a Navy diver; 1996 at the Khobar Towers in Saudi Arabia where we lost 19; the list goes on. We’ve heard their message: “Death to America.” There is no negotiating with mad men.