Russia is facing a critical challenge to its war effort in 2025: The nation is quickly running out of cash, with financial reserves potentially running out before the end of the year, according to estimates from one European economist. Anders Åslund, a Swedish economist and a former fellow at the Atlantic Council, thinks liquid reserves in Russia's National Wealth Fund could potentially be depleted by the fall of this year. That spells trouble for the nation's military efforts in 2025, he said, given how heavily Russia has relied on its wealth fund over the last several years. Liquid reserves in...