I disagree in the killing of ANYONE, without justification. And, there are only 2 justifiable reasons to kill anyone. To prevent your own imminent/immediate death, or to prevent the imminent/immediate death of someone else. Any other reasons are just spin and politics.
I certainly agree that the US should stay out of Middle Eastern affairs, and immediately bring our troops home. Under the Vienna Convention of Diplomatic Relations, it is the host country that must protect the embassy. Even when the host country deems the Ambassador as "persona non grata", and expels him from their country. This is just a symbolic act of protest. But for the rest of the embassy staff, it is still business as usual. And, the host country must still protect the embassy. I have no issues with providing a small contingent of soldiers to provide the internal security for our embassies and its staff.
As far as the US providing training, intelligence, arms, and technical expertise, to become better informed, better skilled, and better trained killers? NO! Haven't we learned anything from our history in this region? Do you really want a list of how many regimes, rebel/terrorist groups, and puppet governments, that we have created, trained, armed and financed since 2001(al Qaeda, YPG, SDF, ISIL, the Taliban, bin Laden, Saddam Hussein, etc.)? ALL FAILURES!!! Stop giving arms to Saudi Arabia and Israel. We are just supporting more terrorist attacks in the region. Stop all these covert CIA operations in the ME. They are nothing more than destabilizing failures. Just get out, and let these people work out their own problem. We have nothing in common with these people. We have enough problems to deal with at home.
Maybe you can give me an example of where this training has been successful? Certainly NOT in Afghanistan and Iraq. I would think that almost 2 decades of training would be enough.