The legislation, which could pave the way for Putin to remain in power until 2036, should he decide to do so and win re-election, reflects radical changes to the constitution that were introduced last year.
The Russian parliament passed the law that gave Putin permission to run for more terms about a year ago.
Putin, 68, is a former agent of the KGB, the former Soviet intelligence service, and has been in power in the country for more than 20 years.
Initially, he was president for two consecutive four-year terms. At the end of that period, an ally of his, Dmitry Medvedev, assumed the presidency, while Putin himself served as prime minister.
During Medvedev’s term, the term was extended to six years. Putin was elected for the third time in 2012 and for the fourth time in 2018.
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