Depends on the definition of "decrease"

More evidence that President Bush's anti-terror strategery isn't working out the way he planned. The number of terrorist groups that want to kill Americans is going up.

[F]our Palestinian armed factions issued a statement calling on mujahideen everywhere to attack American interests, in retaliation for what the Americans have done in Iraq and Palestine. The four groups are the Salahadeen group affiliated with the Popular Resistance Committees; the al-Aqsa Martyrs Brigade; a group named after Ahmad Abu al-Reesh the Sword of Islam; and the Fatah Fighters, Unitary Brigades, or some such name. Al-Quds said the statement comes in response to the US veto of the UN resolution criticising Israel for the Beit Hanoun killings. The statement called on all free people of the world, and all the mujahideen of the Islamic ummah to "satiate the Americans with attacks..." adding that what the Americans have sown with their guns and their airplanes, this is what they should reap. Traditionally, there has been a very strong inclination on the part of the Palestinian resistance to keep their struggle strictly domestic. It is possible that as a result of Beit Hanoun and the US veto, something has snapped.

I'm sure Dear Leader has an excuse.