This 9 February 2019 video from the USA says about itself:
Al-Qaeda Using US Weapons
Saudi Arabia and its coalition gave Al-Qaeda, Salafi militias and other factions in Yemen weapons that were produced by the United States, CNN reported Monday. The weapons have also reportedly been captured by … groups fighting the [Saudi] coalition in Yemen.
By Shannon Young | email@example.com
U.S. Sen. Elizabeth Warren, D-Massachusetts, called on Trump administration officials this week to respond to reports suggesting that foreign governments have transferred American-made weapons to suspected terrorists, armed militias and other unauthorized groups.
Warren, a member of the Senate Armed Services Committee, sent letters Thursday to Acting Defense Secretary Patrick Shanahan and Secretary of State Mike Pompeo seeking information on the alleged weapons transfers — an issue which surfaced in wake of recent news reports.
Pointing to a CNN investigation that found Saudi Arabia and its coalition partners reportedly sent American-made weapons to al-Qaeda-linked fighters … in violation of its agreement with the United States, Warren questioned the federal oversight of such weapons and the enforcement of transfer restrictions.
The senator argued that the report, if true, “raises serious concerns that Saudi Arabia, the United Arab Emirates and other governments may have violated their end user agreements with the United States by diverting American weapons to terrorists and other violent extremists without prior authorization from the U.S. government.”
“It also suggests that Congress should consider whether new reporting requirements should be put in place for monitoring instances when U.S.-origin arms or equipment are lost to hostile actors while in use by authorized recipients,” she wrote.
The senator requested unclassified answers to a series of questions by Mach 8.
She specifically pressed officials for information on: Whether end-use monitoring compliance plans have been revised; the timing of the last familiarization assessment visits and compliance assessment visits; how officials monitor and enforce restrictions on the retransfer of U.S.-origin weapons to unauthorized third parties; and whether Saudi Arabia or other coalition members requested prior approval from the U.S. to transfer defense articles or services to state or non-state actors in Yemen.
The senator also sought answers on whether their agencies are conducting investigations into retransfers of U.S. weapons to unauthorized groups, what reporting mechanisms and requirements currently exist and how the United States attempts to retrieve weapons transferred to unauthorized users, among other things.
Warren argued that “ensuring that foreign governments do not divert American weapons to third parties is an important and necessary way to hold allies and partners accountable and protect U.S. national security.”
The CNN investigation alleged that Saudi Arabia and the United Arab Emirates have used American-made weapons as a form of currency to win support from militias and to influence politics amid the Yemen conflict.
The news outlet reported that U.S. defense officials have confirmed an ongoing investigation into the issue.