In reality, the WSA was a front for a global communist network devoted to taking down the United States and bring about a global communist revolution. The cause of this organization's rise is from the US involvement to support the European countries of Great Britain, Germany, Greece, Turkey and France.
The main members of the WSA are the Soviet Union itself, Iraq, Libya, and Cuba (the four playable nations). The WSA also supported the rise of a communist government in Mexico, which ultimately allowed the Soviets to deploy a large portion of their land-based forces next to the United States' southern border, under the auspices of helping the communist Mexican government put down a local revolt. This why the main thrust of the Soviet invasion of the USA in the Third World War came through the southwestern United States (supported by amphibious landings in the northeast).
The member states of the World Socialist Alliance included:
The World Socialist Alliance was believed to be an organization formed by the Soviet Union to encourage peace and brotherhood and give aid to socialist countries. In truth Alexander Romanov was using this organization of more than thirty-five member states to ruthlessly declare war on the US government for its involvement in Second World War, which lead to Stalin's death.
Third World War
Prior to the events of Third World War, the WSA was considered a harmless economic alliance. As such, the United States was friendly towards the group. A Soviet Commander was preparing the unified WSA forces, under Soviet leadership, to cripple the US.
Operations in the USA
Worst hit were New York (from Big Apple and Lone Guardian), Washington DC (from Liberty, Hail to the Chief, Red Dawn and Desecration), Chicago (from Last Chance), the Florida, Florida Keys and the US Virgin Islands (from Fallout, Hostile Shore and Weathered Alliance) and Hawaii (from Sub-Divide and Deep Sea). They fought the Allies in sixteen missions and Vladimir in only one mission. The US government and military officials like Dugan and Carville evacuated to Canada.
The Defense of the Russian SFSR
Since the brainwashing of New York, some United Nations officials came to Korea to instigate an invasion of the Soviet motherland. Romanov sent a Soviet Commander to stop it and defend the motherland at all costs.
A Soviet army arrived at the allied landing in time, preventing the allies from opening up a second front. (Home Front) Chrono Defense followed and was a great victory of Soviet might against Allied special forces including the British Sniper, and the Battle Lab developing the Apocalypse Tank was successfully defended.
In the canon timeline the Allied storm swept through Moscow, as the Premier had to duck and cover before he was arrested by Tanya for crimes against humanity. The mission's name was Chrono Storm, the final Allied mission of the game. The WSA was crushed as they had insufficient forces to defend Moscow against a full scale Allied invasion, but Yuri decided to use this turn of events for his scheme to conquer the planet via mind control.
European Hearts Trembled
Romanov sent some Crazy Ivans to Paris to remove the European forces from the equation. The Soviets rushed across the city, destroying much of it and annihilating Allied military assets. The mission was a success and the Europeans failed to aid the US forces, turning inward. The City of Lights was named as the Soviet mission to France.
Dark Night and Mirage were two Allied victories in their campaign. The Allied Commander sent his forces around Poland and Germany to destroy two missile silos. The other mission was to defend Einstein from a Soviet assault intending to prevent him from developing any more technologies for the Alliance. All Soviet missiles in Cuba were obliterated by the Allies to protect their chronosphere in the Florida Keys. (Fallout)
Yuri disappeared from the Soviet and Allied endings, but he plans to control the world and in the US city of San Francisco, the first Psychic Dominator was crushed by either the Allied or Soviet forces. Both Time Shift and Time Lapse were named for the first USSR and Allied missions.
Europe in Trouble
Deja Vu was the mission that the Soviet veteran must destroy the laboratory of Einstein from the Allied victors from before. The celebration for the USSR meant that mission was the final one between the Allies and the Soviet winners, fighting each other.
The WSA and the USSR were on the verge of a massive defeat at the hands of both the Allies and Yuri, but only thirty-nine leaders of the WSA, excluding Romanov, had joined the Allies in London to unite their forces to destroy Yuri.
Parliament House was the place for the treaty which the traitor failed to kill the leaders of the new Allied-Soviet faction. This also happened in Antarctica and Romania for the final missions in the Allied and Soviet stories. The three levels were named as Trick or Treaty, Brain Dead and Head Games.
Big Concerns for Yuri
From the Soviet missions, is that Yuri was a non-person and the traitor behind the 1972 defection of Vladimir and murder of Premier Romanov. With Vladimir's death, now gone and Romanov's ill-fated murder, Yuri plans to seek some Psychic powers against the Soviets.
The Soviet veteran rescued the Soviet leader in Morocco, led by Demolition Truck drivers of Libya and Desolator men from Iraq (in the mission, To the Moon). Other parts of the WSA involvement include the attack on Yuri's secret island and his base on the Moon. The names for those levels were Romanov on the Run, Escape Velocity and To the Moon.
Cooperative missions loading screen in Yuri's Revenge
- This name is possibly a Westwood Studios in-joke, as in a pun on Westwood Studios Animation file format (.WSA).
- All playable WSA countries other than Russia, namely Libya, Iraq, and Cuba, have been on the U.S. list of State Sponsors of Terrorism at some point in real life.
- Red Alert 2 - Game Info (archived)