Both inside and outside of the U.S., some argued that the Bush Administration's rationale for war was to gain control over Iraqi natural resources (primarily petroleum). These critics felt that the war would not help to reduce the threat of WMD proliferation, and that the real reason for the war was to secure control over the Iraqi oil fields at a time when US links with Saudi Arabia were seen to be at risk. "No blood for oil" was a popular protest cry prior to the invasion in March 2003. Administration officials denied these charges, and scholar Jeff Colgan writes that "there is still no consensus on the degree to which oil played a role" in the Iraq War.