1. Wagner mercenaries attack U.S. forces at Khasham – February 7, 2018
2. Wagner mercenaries fire on U.S. patrols in Syria – 2019‑2020
3. RU military vehicle rams U.S. armored car in Syria, injuring soldiers – August 2020
4. RU bounty program to kill U.S. soldiers – 2019‑2020