The U.S. has located some 500 chemical weapons in Iraq since 2003 with more likely to be found, according to two Republican members of Congress trumpeting a newly declassified portion of a government report.

“We have found weapons of mass destruction in Iraq, chemical weapons,” Sen. Rick Santorum, R-Pa., said at an afternoon news conference.

Santorum read from a declassified portion of a report by the National Ground Intelligence Center, a Defense Department intelligence unit, which noted: “Since 2003, coalition forces have recovered approximately 500 weapons munitions which contain degraded mustard or sarin nerve agent. Despite many efforts to locate and destroy Iraq’s pre-Gulf War chemical munitions, filled and unfilled pre-Gulf War chemical munitions are assessed to still exist.”

The Pennsylvania senator, who appeared with Rep. Pete Hoekstra, R-Mich., chairman of the House Intelligence Committee, outlined six key points contained in the unclassified overview:

Click to read the declassified portion of the NGIC report

• Since 2003 Coalition forces have recovered approximately 500 weapons munitions which contain degraded mustard or sarin nerve agent.

• Despite many efforts to locate and destroy Iraq’s pre-Gulf War chemical munitions, filled and unfilled pre-Gulf War chemical munitions are assessed to still exist.

• Pre-Gulf War Iraqi chemical weapons could be sold on the black market. Use of these weapons by terrorists or insurgent groups would have implications for Coalition forces in Iraq. The possibility of use outside Iraq cannot be ruled out.

• The most likely munitions remaining are sarin and mustard-filled projectiles.

• The purity of the agent inside the munitions depends on many factors, including the manufacturing process, potential additives, and environmental storage conditions. While agents degrade over time, chemical warfare agents remain hazardous and potentially lethal.

• It has been reported in open press that insurgents and Iraqi groups desire to acquire and use chemical weapons.