Russian President Dmitry Medvedev on Monday appointed three of Vladimir Putin's closest aides to run his administration, ensuring Putin retains his strong grip on power despite leaving the Kremlin.
Putin, who moves to become prime minister, also announced a cabinet which combined key ministers and powerful figures into what analysts said was an unusually strong team.
Medvedev and Putin have pledged to rule Russia together in an unprecedented "tandem" arrangement. But many analysts said the appointments confirmed that Putin remains the real boss, at least for now.
Key Putin ally Sergei Naryshkin - a former government chief of staff reported by Russian media to have links to the security services - was named head of Medvedev's Kremlin administration, while one of Putin's main ideologues Vladislav Surkov becomes the first deputy chief of staff.
"I don't think the appointment of Sergei Naryshkin as head of the presidential administration is the decision of Dmitry Medvedev," said independent political analyst Georgy Bovt.
"I think it is the decision of Vladimir Putin and I don't actually see any appointments apart from (new Justice Minister Alexander) Konovalov that you can put down exclusively to Dmitry Medvedev."
Surkov is credited with partly formulating Russia's "sovereign democracy" system of government which some observers say is autocratic and Medvedev has criticised in the past.
Alexei Gromov, Putin's former press secretary, will also stay in the Kremlin as deputy chief of the presidential staff.
Putin re-appointed his long-serving finance minister, Alexei Kudrin, seen by markets as a guarantor of Russia's free-market policies. Sergei Lavrov, the public face of Moscow's assertive, anti-Western diplomacy, also stayed on as foreign minister.
"While planning the optimisation of federal executive authorities, we aimed to increase the efficiency of the state machinery and its personnel," Putin told reporters as he announced his nominations.
Russia's stock market, which surged last week on the successful conclusion of the political transition, posted further gains of 1.5 percent on Monday.
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