MOSCOW: Russians voted Sunday in an election set to hand President Vladimir Putin a fourth Kremlin term, as the country is embroiled in a crisis with Britain and its allies over a spy poisoning. With the vast country stretching across 11 time zones, polls opened in the Russian far east at 2000 GMT on Saturday and will close in Kaliningrad, the country’s exclave on the EU border, at 1800 GMT on Sunday. With Putin’s main challenger Alexei Navalny barred from taking part in the poll for legal reasons, the result of the election is expected to be hugely predictable, with overall turnout remaining the only element of surprise. Some analysts say that after 18 years of leadership — both as president and prime minister — Putin fatigue may be spreading across the country, and many Russians are expected to skip the polls. The Kremlin needs a high turnout to add greater legitimacy to a new term for Putin, who is already Russia’s longest serving leader since Joseph Stalin. Sunday marked four years since Putin signed a treaty that declared Crimea part of Russia following its annexation from Ukraine, a move that led to the outbreak of a pro-Kremlin insurgency in the east of the ex-Soviet country, in a conflict that claimed more than 10,000 lives. In retaliation, Kiev said earlier this week Russians living in Ukraine would not be able to vote as access to Moscow’s diplomatic missions would be blocked. Since first being elected as president in 2000, Putin has stamped his total authority on Russia muzzling opposition and reasserting Moscow’s lost might abroad. Polling at around 70 percent, the 65-year-old former KGB officer is certain to extend his term to 2024 despite a lacklustre campaign and his refusal to participate in televised debates. Putin has sought to use the election run-up to emphasise Russia’s role as a major world power, recently boasting of its “invincible” new weapons and continuing Moscow’s support for the Syrian regime in a bloody civil war. Rising tensions with the West over the poisoning of former double agent Sergei Skripal in Britain, and new sanctions from Washington over alleged election meddling, strengthen the impression of a Russia at loggerheads with the rest of the world.