Ukraine's mid-range drone strike campaign is causing both practical and psychological problems for Russia, a defense official said.

The math world is losing its mind over the new solution to an Erdős problem. This is what AI found, how we missed it—and why ...

Officials across NATO are condemning a Russian drone strike on an apartment building in Romania, near the border with Ukraine.

Venezuelan crude has become cheaper than Russian oil delivered to Indian ports, a reversal that would have seemed impossible ...

In an era with global economy marked by trade barriers, energy uncertainty and supply-chain disruptions, resilience matters ...

High oil prices driven by the U.S. operation against Iran are not sufficient to save the Russian economy, according to ...

Western airpower debates are increasingly driven by grim math. Analysts tally missile inventories, strike ranges, and ...

Four years after the full-scale invasion of Ukraine, Russia is facing a spring of discontent. Rolling digital blackouts in Russian cities have touched a nerve with ordinary citizens and public ...

The coalition has also not resolved the question of what any of its forces would be authorized to do once a ceasefire takes hold.

Who doesn't want to be a millionaire? Maybe a 43-year-old unemployed bachelor who lives with his mother in Russia — and who won $1 million for solving a problem that has stumped mathematicians for a ...