Syria loses Idlib to the Ottoman Empire

I read many Obamabots and Clintonbots (including the New York Times) say that Russia is not the USSR, but is a very minor power, on the level of Panamá, that all Russia's weapons are just Photoshop. A Frenchman and an Austrian figured that was true, and the Frenchman tried to force regime change in Russia, and the Austrian tried to force regime change in the USSR. Now, however, Turkey sent its army into Idlib, and said it would fight against any attempt to reattach Idlib to Syria. The rest of NATO said they'd support Turkey if Russia tried to take Idlib. After a couple of days (one in Tehran and one in Sochi) Putin agreed: Turkey can keep Idlib.

Then Israel sent four aircraft behind a Russian aircraft, and began firing missiles at Syria. Syria shot back, and shot down the Russian plane. Israel says it was obviously the fault of the incompetent Syrians. Putin says he'll do nothing about it (the Russian propaganda channel keeps saying it was obviously Israel's fault, but Putin has not said that, and that's not the official Russian position).

Is Russia just a paper tiger? Is it quite unable to stand up to the US, knows it, and will always back down? If so, WWIII is off the table, and the US will keep expanding its influence, and will continue killing anyone who objects to US hegemony. After all, the US is the Greatest Force for Good in the World (just read US history books), so US hegemony over the entire world is all for the best.

(Of course, there's a nation with a bigger GDP than the US, a stronger military than the US, and they've made Venezuela part of their Belt and Road, so they're vehemently opposed to regime change, which the US is threatening, so even if Russia will always back down, there's a much bigger player than Russia that might not. At least Venezuela must hope so.)