There are Four Major power blocs
The Atlantic Federation: Eastern US, Eastern Canada, Mexico, some of the Caribbean, the UK, France, Germany, and parts of Africa (Nigeria, Congo)
The Eurasian Alliance: Central and Eastern Europe, the Mediterranean and near East, North Africa, Israel, Iran, Pakistan, etc
The Asian Co-Prosperity Sphere (ACPS) - China, SE Asia, Mongolia, India, parts of Indonesia, Korea
The Reunited Socialist Soviet Republics - Russia, former soviet republics (Ukraine, Belarus, the various 'istan nations)
There are several smaller power blocs
The United States of South America (USSA) also known as the Amazon League or Amazonia
The Kingdoms of Scandinavia - Norway, Denmark, Sweden, Iceland, Greenland
The South African United Republics (SAUR) South Africa, Zaire, up through Kenya excluding the AtFed footholds and the North African region
The Pacific Rim Confederation - Japan, Australia, Micronesia, California, Alaska, etc
Finally there are a collection of states that have fallen through and are considered the new third world, such as Somaliland, large parts of the Middle East are claimed only in a strategic sense and are now largely vacant following the death of the PetroDollar.
The Atlantic Federation maintains an extensive network of space stations, habitats, and colonies on the Moon and Mars. The Eurasian Alliance, PacRim Confederation, and the ACPS also maintain space operations. The Neo-Soviet Empire is building up it's space capacity, but it's attention is mostly focused on rebuilding it's infrastructure after the Second Great Patriotic War for consolidation.
Thoughts? Have I overlooked someone, or left something out, or have I put some things together that dont beling together?