The history of the first START treaty is completely unknown.
START-3 was adopted in 2011 by Osea and Yuktobania as part of restoring relations between the two countries following the Circum-Pacific War. START-3 aimed at directly reducing the number of nuclear and strategic weapons each country possessed by disposing of them.
Yuktobania's construction of the Alicorn was reported in news media as a potential violation of START2, since the Alicorn could carry SLBMs equipped with nuclear warheads. The Alicorn was sent to be scrapped in 2012 under the terms of START-3. It ended up in the Erusean Royal Navy and was sunk during the Lighthouse War.
- The START treaties are modeled after the real-life ones, namely START I and START II, between the United States of America and Russia (the Soviet Union for START I). However, START II never came into effect in real life; it was superseded by two new treaties, SORT and New START.