The B-29s Stratofortresses could get low just before penetration, but even if detected at their high altitudes the Soviet AF didn't have capable fighters to intercept them for a few years.
First of all they didn't have any bombs left to carry at that point so even if you are right it does not matter.
Second there was a vast Soviet Army sitting in the middle of Europe... I am sure even the weakest excuse to continue to the English coast would be all that was needed.
Even a MiG-3 would paste a B-29 most of the time, and their later fighters were not designed for high altitude operations, but they had quite a few aircraft that could have done the job... even if it came down to ramming the American bombers.
In a ny case, Stalin didn't want to fight USA on 2 fronts over N. Japan- by then, he had all of Korea & the Kurils
Funny, how the west first claims evil stalin wants to invade Japan and only the brave and handsome Americans stopped it by murdering half a million people with two nuclear bombs... but then when analysed and you realise Stalin clearly had no intention of breaking his agreement with the US to join the war so that the US wasn't left fighting the Japs on their own, Stalin is still the evil bad guy and the Americans the good guys.
American paranoia led to them assuming Stalin would do what they would do and they murdered hundreds of thousands of people to try to send a strong message to Stalin. I am sure they did... these guys are fucking crazy.
Stalin got back all the territory Russia had lost over the years including the kuriles... note they didn't occupy Korea or China or Manchuria, like the US occupied South Korea and Japan and Germany... but again Russia is the bad guy...
those exceptions prove the rule: the Cold War mostly stayed cold with occasional incidents & flare ups.
That is just stupid... that is like saying Adolf Hitler was a peace loving leader... all those countries he invaded were self defence or necessary and therefore these exceptions proved the rule... no they don't.
The Cold War was a period of two sides actively using proxies to damage or take land or resources from the other... there was nothing cold about it.
The USS Halibut was also used on spy missions several times in Soviet waters, & it got a way with it.
Yeah, those aggressive commies who wanted to dominate the world... don't hear about Soviet bomber crews or recon crews shot down entering US airspace or Soviet ships in US waters...
Today, Russia & US r still avoiding direct conflict- they use proxies & mercenaries so their active duty service members don't kill each other.
Yes, of course... I wonder if that 5 billion dollars the US spent to overthrow the legitimate government in the Ukraine included the funds to pay the Georgian snipers to murder police and innocent civilians.... or was that extra?