for continued active production of weapons of mass destruction subsequent to the imposition of sanctions in 1991, though "[b]y 2000–2001, Saddam had managed to mitigate many of the effects of sanctions". The report concluded in its Key Findings that: "Saddam [Saddam Hussein] so dominated the Iraqi Regime that its strategic intent was his alone... The former Regime had no formal written strategy or plan for the revival of weapons of mass destruction after sanctions. Neither was there an identifiable group of weapons of mass destruction policy makers or planners separate from Saddam. Instead, his lieutenants understood weapons of mass destruction revival was his goal from their long association with Saddam and his infrequent, but firm, verbal comments and directions to them." The report also noted that "Iran was the pre-eminent motivator of [Iraq's weapons of mass destruction revival] policy.... The wish to balance Israel and acquire status and influence in the Arab world were also considerations, but secondary." A March 2005 addendum to the report stated that "based on the evidence available at present, ISG judged that it was unlikely that an official transfer of weapons of mass destruction material from Iraq to Syria took place. However, ISG was unable to rule out unofficial movement of limited weapons of mass destruction-related materials". On 12 January 2005, US military forces abandoned the formal search. Transcripts from high level meetings within Saddam Hussein's government before the invasion are consistent with the ISG conclusion that he destroyed his stockpiles of weapons of mass destruction but maintained the expertise to restart production. Discovery of chemical weapons In the post-invasion search for weapons of mass destruction, US and Polish forces found decayed chemical weapons from the Iran–Iraq War. These chemical weapons led former senator Rick Santorum (R-PA) and representative Peter Hoekstra (R-MI) to say that the US had indeed found weapons of mass destruction in Iraq. These assertions were directly contradicted by weapons experts David Kay, the original director of the Iraq Survey Group, and his successor Charles Duelfer. Both Kay and Duelfer stated that the chemical weapons found were not the "weapons of mass destruction" that the US was looking for. Kay added that experts on Iraq's chemical weapons are in "almost 100 percent agreement" that sarin nerve agent produced in the 1980s would no longer be dangerous and that the chemical weapons found were "less toxic than most things that Americans have under