Happy Memorial Day.

In an April 17 report written for the United States government, Dennis Pluchinsky, a former senior intelligence analyst at the State Department, said battle-hardened militants from Iraq posed a greater threat to the West than extremists who trained in Afghanistan because Iraq had become a laboratory for urban guerrilla tactics. (snip)

The test case here is a foiled plot to blow up Amman's Queen Alia International Airport. In essence, jihadists came together -- a bomb-maker from Iraq, a prison-furloughed radical from Libya, a Damascus ringleader -- in areas of Syria where the Iraqi diaspora now resides and in the volatile Jordanian city of Zarqa, home to Abu Musab al-Zarqawi. Expect the 2-million-and-growing Iraqi refugee population in Jordan, Syria and elsewhere to be a prime stomping ground for jihadis looking to plan attacks in the region and beyond. That will become true central front of the war on terror.