Yes, the US.

If you are stabbing someone on the ground and I am standing next to you, pointing a gun at anyone who comes close and tries to help, and when your current knife breaks I hand you another one to use, I am an active participant in your crime. If it weren't for me, someone would have got you, or you wouldn't have done it in the first place due to caution since no one is there to protect you.

US took that role with Israel, and was an activate participant in Israel's genocide of the indigenous people of Palestine.