The United States supported the Islamists, Taleban among others in Afghanistan against the Russians. This shows that for Reagan and Bush senior the fight against the Russians were more important than fighting radical Islam. And I can understand that, because 20-30 years, things looked rather different in the word. And this has been my point all a long that the real fight against radical Islam under the definition terrorism began first back in 2001.
But i have already noted that Islamic extremist groups and countries are supported by the US now, as well.
I'll cede that Russia is no longer perceived as a threat (it wasn't, in reality, by Reagan's time), but i doubt that was the crux of your argument? If it was, i'll agree right now, obviously.