John Brennan, director of the Central Intelligence Agency, went on "Face the Nation" last Sunday and did something weird: he acknowledged that U.S. foreign policy might sometimes cause terrorism. Of course, he didn't word it exactly like that, but close enough:

BRENNAN: I think the president has tried to make sure that we're able to push the envelope when we can to protect this country. But we have to recognize that sometimes our engagement and direct involvement will stimulate and spur additional threats to our national security interests.

This is notable because the people who run our foreign policy usually tell us that terrorists are like zombies, driven by some incomprehensible force to kill and kill and kill until we take them out with a head shot/drone strike. Brennan himself did this five years ago while "answering" questions from the late reporter Helen Thomas about Umar Farouk Abdulmutallab, the 23-year-old Nigerian man who tried to blow up a Northwest flight over Detroit:

THOMAS: And what is the motivation? We never hear what you find out on why.

BRENNAN: Al Qaeda is an organization that is dedicated to murder and wanton slaughter of innocents …

THOMAS: Why?

BRENDAN: I think this is a — this is a long issue, but al Qaeda is just determined to carry out attacks here against the homeland.

The next year Abdulmutallab explained at his sentencing what had motivated him:

I [attempted] to attack the United States in retaliation for U.S. support of Israel and in retaliation of the killing of innocent and civilian Muslim populations in Palestine, especially in the blockade of Gaza, and in retaliation for the killing of innocent and civilian Muslim populations in Yemen, Iraq, Somalia, Afghanistan and beyond, most of them women, children, and noncombatants.

In fact, the government's own sentencing memorandum for Abdulmutallab cites this statement, and points out that trying "to retaliate against government conduct" is part of the legal definition of terrorism.

So Brennan well understands that our foreign policy causes attacks against Americans.