The Operation Iraqi Freedom FAQ utilizes issue-rule, fact pattern analysis and adapts the legal standard for primary sources, as opposed to the looser political science standard that allows primary source status for secondary expert sources:

Sources: Stanford Law School (top) and Hal Brands & Peter Feaver (bottom).

When relitigating the Iraq issue, the OIF FAQ applies impeachment by contradiction to show where influencers credibly accord with the operative law and facts of the Iraq issue and where they have misinformed the public contra the operative law and facts:

Source.