DEBKAfile military sources: US forces approaching Baghdad face WMD threat once across Tigris River – Saddam’s signal to loose chemical, biological and possibly nuclear weapons.

Worse, DEBKA also notes other mounting signs of a widening war:

Friday, (US Defense Secretary Donald) Rumsfeld put both Damascus and Tehran on notice: Continued shipments of war material, equipment and combat personnel into Iraq – including the pro-Iranian Hizballah – would lay both nations open to United States counter-action. The defense secretary made no mention of the Palestinians heading for Baghdad but, according to DEBKAfile’s sources, an American attack on Palestinian concentrations in south and north Lebanon cannot be ruled out. Both locations are recruiting centers for Palestinian volunteers who set out armed with weapons handed out by various bodies including al Qaeda agents.