because "success" is not a word that I'd use to describe US Middle East policy.
If your're interested in what our Trump-hating ruling elite considers successful foreign policy, FP's Twitter post refers to article at https://foreignpolicy.com/2019/12/15/carter-doctrine-rip-donald-trump-mideast-oil-big-think/ .
FYI, Foreign Policy magazine is a project of the Carnegie Endowment for International Peace.
4 decades would take us back to 1980. I guess maybe the Iranian Revolution and subsequent hostage taking wasn’t considered a success at least.
A successful Middle East Policy is: not one more American Life lost or Dollar spent in that area. Two Iraq wars, funding ISIS via Libya, the coup in Libya, the hostage taking in Iran. Some successful policy.
Oh yes, the “source” IS the key to understanding the bias and foolishness of the subject: ONLY a globalist/Arabic-centric/pro-Muslim extremist/ anti-American/Anti_Israli screed would consider changing the US MedEast policy since Carter a “failure” .