An Argentine nurse reaching for a dose of the Sputnik V vaccine during the first stage of the mass-vaccination campaign in El Palomar, Argentina, on February 18. Marcos Brindicci/Getty Images Russia's Sputnik V vaccine has been approved in more than 40 countries, its makers said. Many have little access to shots made by Western firms such as Pfizer and Moderna. An expert told Insider that Russia stepping in would give it a geopolitical advantage. Visit the Business section of Insider for more stories. Russia's Sputnik V vaccine is gaining ground in Latin America, Eastern Europe, Asia, and Africa.More than 40 countries have reached deals with the makers of the vaccine, many of which have little ability to access the in-demand shots made by Western companies that are powering vaccination drives in the US and Europe.The Russian Direct Investment Fund, the body that backed the vaccine and handles its marketing, listed the nations in a press release Wednesday.They are: Europe: Russia, Belarus, Serbia, Slovakia, Hungary, Armenia, Montenegro, San Marino, Moldova.Asia: Turkmenistan, Pakistan, Kazakhstan, Uzbekistan, Syria, Kyrgyzstan, Myanmar, Syria, Mongolia, Sri Lanka.Americas: Argentina, Bolivia, Venezuela, Paraguay, Mexico, Nicaragua, Guyana, Saint Vincent and the Grenadines, Honduras, Guatemala.Africa and Middle East: Algeria, Angola, the Republic of the Congo, Djibouti, Republic of Guinea, Tunisia, United Arab Emirates, Iran, Bahrain, Lebanon, Gabon, Egypt, Ghana.The vaccine is also approved by the Palestinian Authority and by an entity of Bosnia and Herzegovina called the Srpska Republic, the press release said.This isn't just about public health, of course.