The number of billionaires in Russia, China, and Brazil has increased since last year, according to data compiled from Forbes’ latest rich list (click here for Forbes’ billionaires page). RFE/RL analyzes the Russian contingent, pointing out that ‘more billionaires live in Moscow than any other city in the world‘.  US Vice President Joe Biden’s trip to Moscow has focused mainly on business thus far, with Dmitry Medvedev saying that ‘our economic relations significantly lag behind political progress‘.  Biden says that Russia’s WTO accession is ‘the most important item on our agenda,‘ promising to push for the repeal of trade restrictions, as Medvedev expressed hope that the process would be completed this year.  One of the key deals overseen by the pair is the Boeing-Aeroflot agreement, under which eight Boeing jets, worth $250 million each will be sold.  Vladimir Potanin may not be the closest of friends with Oleg Deripaska these days (the two are feuding over Norisk Nickel) but that didn’t stop him from buying up a tranche of Rusal shares ‘when they fell‘.  Russia is banning all weapons sales to Libya.