From a discussion on Monday’s NewsHour:
PETER RODMAN: I think we should start rolling up, as we have, rolling up Iranians that we catch on Iraqi soil, I think very aggressively, as we’ve started to do, detaining people, because they have no business making mischief in Iraq….
JUDY WOODRUFF: So continue to be aggressive in going after any Iranian presence?
PETER RODMAN: I think we have a big Iran problem, and the Iraq problem is one part of that.
Emphasis mine. Peter Rodman was until very recently assistant secretary of defense for international security affairs.