Not silly but stupid naivety. Russia's Stalin should not have been trusted.
Why ?
He forgot to leave the countries that he " freed ". Instead he brutally occupied them to spread his dreams of worldwide domination and communism. The evil force of Nazi Germany was replaced by the evil force of Stalinist Russia.
The Russians wanted the western sectors so they wouldn't allow food and supplies into Berlin. The airlift provided food and supplies for West Berlin for nearly a year.
Eisenhower prevented Patton's 3rd army to advance on Berlin. Patton's tanks and troops were making unprecedented progress towards Germany. Patton urged Ike to allow him to advance to no avail. The terrible results were that the USSR did capture Berlin. If Patton succeeded then things like the Berlin Wall and the Berlin airlift crisis never would have happened.
After the Nazi invasion of Russia failed,the Russians launched a massive counterattack. While the German Army was being pushed back to Germany the Americans and British launched the D-Day Invasion crossing the English Channel from Britain and landing on the beaches of the French coast. As these forces fought their way inland across France, the Russians were coming from the East,so Germany found itself being closed-in on from both sides. The Russians were the only Army which actually captured and occupied Berlin. The American and British Armies were ordered to stop their advance at a certain point and allow the Russians to take Berlin alone (politics at work even in wartime).
Chloroplast allow plants to capture energy from sunlight.
The capture and control of the Russian city Stalingrad would allow German forces to control all commercial traffic on the Volga river thus severing the Russians from a major riverine supply route and also the control of the city would allow German forces access to the strategically important Caucasian oilfields as well as protecting the border of their Romanian allies and the Ploesti oilfields .
Following the defeat of Germany, control of the country was divided amongst the allied countries in a pie-like manner. Germany's capitol, Berlin was divided similarly. Berlin, however, lay within the area of Germany given to Russian control. Thus, the American/British-controlled portions of Berlin were surrounded by Russian-controlled Germany. The Berlin Wall was built by the Russians in the territory they had control over, the US had no means by which to prevent it, short of declaring war on Russia. The wall surrounded the American/British-controlled section.
We didn't want to get involved
In WW1 , the Germans were able to reinforce the Western Front .
they saw the opportunity and took it
It wasn't worth going to war over the Wall.
They couldn't get to work anymore because the wall didnt allow people from the east to commute to the west. They had to find a new job in the east.
Chloroplast allow plants to capture energy from sunlight.