It gives a whole new meaning to the expression "job sharing". Russian president Vladimir Putin has taken office, a role he held until 2008. After two terms, the country's constitution obliged him to step down and Dmitry Medvedev was elected in his place. But now, Putin has taken back the top job, while Medvedev has taken Putin's interim role of Prime Minister. Muscovites have protested at this perceived attempt to hold on to power forever and the lack of a strong opposition to fight back.