I know all about it. And how the Soviets flipped sides with several arab countries (look at Egypt for example and the Muslim Brotherhood to kill Sadat after the Egyptians pushed the Soviets out of the country) depending on where their allegiances lied.Interesting that you many place the Communist movement as one of the most consequential. I don't disagree, but you may be surprised to learn about the Zionist involvement within the USSR. they had quite the foothold in Soviet Russia pre- WWII
The Soviets hated Israel...until they didn't...until they did again.
However...you could argue that a lot of the origins of islamic terrorism originated with Soviet support for Palestinian terrorists: How the Soviet Union Transformed Terrorism - The Atlantic