In the wake of a United Nations investigation implicating a number of Syrian and Lebanese officials in the assassination of former Lebanese Prime Minister Rafik Hariri, the Bush administration is calling for international sanctions, and leaking dark hints of war. But the United States is already unofficially at war with Syria. For the past six months, U.S. Army Rangers and the Special Operations Delta Force have been crossing the border into Syria , supposedly to “interdict” terrorists coming into Iraq . Several Syrian soldiers have been killed.