By DAVID KLEPPER, Associated Press

WASHINGTON (AP) — As bullets and bombs fall in Ukraine, Russia is waging an expanding information war throughout Eastern Europe, using fake accounts and propaganda to spread fears about refugees and rising fuel prices while calling the West an untrustworthy ally.

In Bulgaria, the Kremlin paid journalists, political analysts and other influential citizens 2,000 euros a month to post pro-Russian content online, a senior Bulgarian official revealed this month. Researchers also have uncovered sophisticated networks of fake accounts, bots and trolls in an escalating spread of disinformation and propaganda in the country.

Similar efforts are playing out in other nations in the region as Russia looks to shift the blame for its invasion of Ukraine, the ensuing refugee crisis and rising prices for food and fuel.

For Russia's leaders, expansive propaganda and disinformation campaigns are a highly cost-effective alternative to traditional tools of war or diplomacy, according to Graham Brookie, senior director at the Atlantic Council's Digital Forensic Research Lab, which has been tracking Russian disinformation for years.

“Stirring up these reactions is the low-hanging fruit for Russian information operations," Brookie said. "Their state media does audience analysis better than most of the media companies in the world. Where these narratives have succeeded are countries where there is more weaponization of domestic discourse or more polarized media markets.”

Bulgaria was long counted a stalwart Russian ally, though the country of 7 million residents has turned its attention westward in recent decades, joining NATO in 2004 and the European Union three years later.

When Bulgaria, Poland and other former Warsaw Pact nations sided with their NATO allies in support of Ukraine, Russia responded with a wave of disinformation and propaganda that sought to exploit public debates over globalization and westernization.

For Poland, that took the form of anti-Western propaganda and conspiracy theories. One, spread by a Russian-allied hacking group in an apparent effort to divide Ukraine and Poland, suggested that Polish gangs were harvesting the organs of Ukrainian refugees.

Russia's onslaught comes as Eastern European governments, like others around the world, grapple with dissatisfaction and unrest caused by rising prices for fuel and food.