Because Russians have already killed 100K Americans via Korea and Vietnam, not to mention poisoned much of the world's minds against the US via extremely effective propaganda? Given the number of restive (and violent) minorities in Russia proper, there are a lot of things the US could do to make trouble. Ultimately, unlike Russia's efforts in Afghanistan and Ukraine, the US was never going to annex either Iraq or Afghanistan, so there was never a prospect of a long term war in either of those two locations. And the Iraqi and Afghan insurgents got all the supplies they needed via their porous borders. Not to mention that their insurgents included a lot of Russian Muslim minorities who would have made life interesting for Russia if they had returned alive. Ultimately, we helped cleanse Russia of its troublesome zealots. It would be stupid for Russia to get in our way, and even Putin understood that.
>>Because Russians have already killed 100K Americans via Korea and Vietnam, not to mention poisoned much of the world’s minds against the US via extremely effective propaganda?<<
Wasn’t it too long time ago?
>>Ultimately, unlike Russia’s efforts in Afghanistan and Ukraine, the US was never going to annex either Iraq or Afghanistan, so there was never a prospect of a long term war in either of those two locations.<<
Yep, sure. Russia was never going to annex either Cuba and Venezuela and there was never a prospect of a long term war in either of two locations. For the very same reason.
>>And the Iraqi and Afghan insurgents got all the supplies they needed via their porous borders.<<
Not from Russia for sure. In fact, at least in case of Afghanistan, US forces are largely dependant on Russian intelligence? Not to mention supplies via Russia territory, because it is more reliable than via ‘allied’ Pakistan.
>>Given the number of restive (and violent) minorities in Russia proper, there are a lot of things the US could do to make trouble.<<
Yep, sure. McCain and a number of people in State Dept and other bodies does. I don’t think that an American-Chechen peace group was ever disbanded after Beslan massacre. And McCain voiced support for a communist crowd, trying to overthrow Putin’s government in 2012 in Moscow. A US ambassador to Moscow spends more time chatting with communists, anarchists and other -ists than he does with Russian authorities. Yet, you are awaiting any pro-American stance from Russia.