Here is a photo of the modern Su 37 with forward swept wings.
http://www.planespot.com/aviation/su-37.htm
The use of two engines positioned near the front of the aircraft was tested in the US on the XB-51.
That the Germans had developed the atomic bomb is a certainty. A layout diagram was discovered in a Russian archive. It is a fact that the Americans acquired 1100 tons of uranium ore at a location near Stassfurt on April 21, 1945. The source of uranium for the US after the war was the Belgian Congo.
My father, who ended up in the American Zone in Germany, was approached by some men shortly after the war. He was promised a large payment in cash and gold if he agreed to join an operation headed for the Belgian Congo. Not knowing who they were or what might be behind this request, he refused. In the book Critical Mass, author Carter Hydrick uses original documents and access to people who worked in the American atomic weapons program to show that a captured u-boat was carrying enriched uranium in gold lined containers. It also carried infrared fuses. The uranium ended up in the atom bombs dropped on Japan.
Ed