Terrorist crossing point?

In yet another article pointing out that Iraq is the new expert training ground for terrorism,

Intelligence sources tell CBS News that under pressure from the United States, the route in through Syria is now largely closed. In some cases jihadists are using European airports with direct flights to northern Iraq.

So, if they're not coming across from Syria, that pretty much leaves Turkey (with the Turks and PKK on the border?) or our allies Jordan or Saudi as the crossing point.

Also, (Reuters) "The U.S. House of Representatives voted on Friday to prohibit any aid to Saudi Arabia as lawmakers accused the close ally of religious intolerance and bankrolling terrorist organizations."