The media is guessing at best and not telling people anything of substance, aside from “This happened…” followed by propaganda and guesses.
Based on my lengthy studies on World War II to the fall of the Soviet Union, it was inevitable that the Russian Federation, and US, would be flying over restricted airspace, leading fighter-bombers against unidentified or vaguely identified targets in Syria and so on. US warships recently got a little too close to China for reasons unknown. This seems to boil down to: “No more paper games and reconnaissance, we can and will get in your face” and they have. Why? To show off our might in direct view? To show “the other guy” that “we’re watching you so you better fear us?” “We’re ready to take you on?”
Anyway. Bottom line: Russia wants lands and resources, the US wants land and resources. After all the soldiers, tanks, jets, etc., leave or occupy wherever, we or they make the government, whoever that may be, buy from us only, or in the case of Russia, from Russia only. We or Russia get the upper hand and we or they start making money, with a few threats thrown in if they don’t “cooperate” down the line or start making trouble (partisans blowing up trains, ambushing soldiers and supplies; the usual fare). Kind of like the Mafia in a way.
On the ideological front, money is money, and getting more resources and land increases that country’s “sphere of influence.” With all due respect to the armed forces who love their respective countries.
Ed