The red line must be drawn on Iran's nuclear enrichment program because these enrichment facilities are the only nuclear installations that we can definitely see and credibly target.
In 2012, General Dempsey, General Petraeus directed the CIA, Secretary Panetta and Secretary Clinton recommended to the president to robustly arm and train the Syrian moderates. He says no. In 2013, conduct a military strike, same national security team, against the Assad regime because he violated the chemical red line. He says no.
I was very upset in August of 2012 when President Obama declared a red line against Syria and said if these chemical attacks continue, that's it, we're done, we're getting involved and we did nothing. When you're the commander in chief, the buck stops with you.
The United States, and the president's made this clear, does not want Iran to develop a nuclear weapon. That's a red line for us. And it's a red line obviously for the Israelis so we share a common goal here.
Debating religious beliefs are a red line, a deep red line.
Our bottom line, if you want to call it a red line, president's bottom line has been that Iran will not acquire a nuclear weapon and we will take no option off the table to ensure that it does not acquire a nuclear weapon, including the military option.