The author seems to have missed several memos so his claim that "Enough facts are in the public record about the Benghazi murders of Libyan Ambassador Chris Stevens and 3 others, including two Marines, that a final judgment can be rendered on President Obama's handling of the affair." is ill founded:
1) Libya Warnings Were Plentiful, but Unspecific; http://www.nytimes.com/2012/10/30/world/middleeast/no-specific-warnings-in-benghazi-attack.html?emc=eta1
2) Condi Rice Pours Cold Water On ‘Benghazi-Gate’ >
3) Romney & Co., Beyond the Pale in Politicizing Benghazi;...