Timber Sycamore
Subject: The CIA programme that armed Syrian rebels, 2013-2017
The United States ran a covert programme arming and training Syrian rebel factions. Officials themselves acknowledged that some of those weapons reached jihadist groups.
01The allegation
Beginning in 2013 the CIA trained and armed Syrian opposition fighters in Jordan and Turkey, with heavy Saudi funding. Reported costs ran to roughly a billion dollars a year, making it one of the agency's largest covert programmes. A separate, smaller and openly acknowledged Pentagon train-and-equip effort ran alongside it and collapsed publicly in 2015 after producing a handful of usable fighters.
02Origin
The programme's existence was reported by the New York Times and Washington Post and later effectively confirmed when President Trump ended it in 2017. The Pentagon's parallel programme was described to Congress under oath by General Lloyd Austin, who put the number of remaining US-trained fighters in the field at "four or five".
03What's known
The documented failures are specific. Jordanian intelligence officers were reported to have sold weapons from the pipeline. TOW anti-tank missiles issued to vetted units turned up in videos posted by al-Nusra and allied groups. Vetted factions merged with, were absorbed by, or surrendered stocks to Islamist rivals. What the record supports is that the programme leaked badly into the hands of extremist groups. What it does not support is that this was the objective: the same government was simultaneously bombing those groups.
Documented risk
US-supplied weapons were documented in the hands of factions the programme was meant to exclude, including al-Nusra. Once a weapon enters a war economy, the vetting attached to it does not follow it.