The United States is basically unchanged, other than the rise of many strange cults.
Russia has become a major force again, thanks to the discovery of massive oil fields in the arctic. It's rumored to contain highly advanced magical research facilities.
The middle east is now primarily concerned with two growing superpowers: Israel and the Islamic League of Peace (Iran and Saudi Arabia), which are engaged in an ever-escalating technological/hacking cold war (think Neuromancer).
Korea is now a single country, but still very much divided into two states. The DMZ still exists.
Japan struggles with an aged population and a large influx of Korean refugees, but has become the world leader in integrating technology and magic.
Sub-Saharan Africa has been quarantined due to the outbreak of HAIDS.
Northern Africa and Southern Europe have formed the Mediterranean Hegemony of Equality, an EU-like economic and political group which comprises the nations surrounding the Mediterranean Ocean.
China has calmed down and now has a cordial–if often strained–relationship with the rest of the world.
Europe is freaking out.
Central America has dissolved into territories run by drug cartels.
South America is relatively unchanged, though there's a lot of magical research in the rain forests.