Sen Graham is far more than a damn fool. I think he just destroyed himself as a spokesperson for the Democrat Party. IMHO he also presented a position we will not be hearing from the Democrat side of the aisle again. He proffered that a terrorist cell, such as the 5 Yemenis living in Lackawanna, is more of a threat to the United than Iran and Iraq. So I guess he saw the Florida stopping of the three medical students as a victory on a par with D-Day.
Iran is more of a threat. It is a bigger promoter of militant Islam, it has the largest military force in the mid-East except for Israel, and possibly Egypt. It is building up that force extremely quickly. It is subject to internal turmoil which drives countries to wage war. It has weapons of mass destruction, including a well established nuclear program.
Having said that, Iraq should be attacked first. It is the logical first dominoe to fall, and makes for the best staging area for further operations into Iran, or Saudi Arabia. (and don't think for a second those options are not being reserved by the administration)