Flag of the Russo-American Alliance

This is the flag of the Russo-American Alliance.  It comes from a world where World War II dragged on for long than it did in our world, before ending in a stalemate.  The Allies and Axis signed an armistice, but officially, the war never ended.  For the next few decades there was an uneasy peace as the major and minor powers improved their technology in apprehension for the war heating up again.  One development was the beginnings of colonizing the Solar System.  The other major way this world differs from ours is that the Solar System is teaming with habitable worlds, much like it is depicted in science fiction from the 50s and 60s.  

Colonization of the Solar System got a major boost when the war finally started up again.  By this point, both the Allies and the Axis had developed atomic bombs.  Both sides were more than willing to use their nuclear weapon, along with other new weapons such as remote controlled asteroids.  As a result, Earth's environment was completely devastated.  Numerous cities were destroyed, massive crop failure occurred due to nuclear winter, and overall it was not a good time to be living on Earth.

The nations of the Earth, or at least, the ones with space programs, engaged in a mass evacuation attempt.  New alliances were forged and cultures were intermingled.  By the 21st century Earth remains a backwater planet just beginning to show signs of recovery from the nuclear war.  Meanwhile, Mars and Venus shine as bastion of culture and freedom, and are locked in a bitter war against the moons of Jupiter and Saturn. 

The war continued even into space, but for now at least, things are at an uneasy truce.  The Allies laid claim to the Inner Planets, while the Axis were pushed to the Outer Planets.  The astroid belt was claimed by neutral nations, such as Switzerland, and become something of a neutral zone between the two.  Recently, the Oort Cloud and Kuiper Belt have been designated as neutral zones as well. 

The Russo-American Alliance started off as a coalition the United States, the Soviet Union, the British Empire and the French Empire.  However, Britain and France took quite a beating during the thermonuclear war.  As a result, America and Russia came to dominate the alliance both culturally and in terms of political clout.  The official language of the Alliance is Runglish, a combination of Russian and English, with a few bits of French thrown in.  Venusian Runglish is more similar to Russian, while Martian Runglish is more similar to English.  

The blending of Russian and American culture is most evident with the design of the flag.  The flag is a combination of the American and Soviet flags.