President Vladimir Putin’s announcement in August that Russia had cleared the world’s first Covid-19 vaccine for use before it even completed safety trials sparked skepticism worldwide. Now he may reap diplomatic dividends as Russia basks in arguably its biggest scientific breakthrough since the Soviet era.

Countries are lining up for supplies of Sputnik V after peer- reviewed results published in The Lancet medical journal this week showed the Russian vaccine protects against the deadly virus about as well as U.S. and European shots, and far more effectively than Chinese rivals.

At least 20 countries have approved the inoculation for use, including European Union member-state Hungary, while key markets such as Brazil and India are close to authorizing it. Now Russia is setting its sights on the prized EU market as the bloc struggles with its vaccination program amid supply shortages.

In the global battle to defeat a pandemic that’s claimed 2.3 million lives in little more than a year, the race to obtain vaccines has assumed geopolitical significance as governments seek to emerge from the huge social and economic damage caused by lockdowns imposed to limit the spread of the virus. That’s giving Russia an edge as one of a handful of countries where scientists have produced an effective defense.

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