The former leader of America’s largest neo-Nazi group believes white supremacists and far-right extremists plan to fight in Ukraine if Russia launches an invasion. Jeff Schoep, who led the Nationalist Socialist Movement before abandoning fascism, said war would draw extremists to both sides of the struggle. And just as the rise of ISIS in Syria has made that country a training ground for Western jihadists, Ukraine has also become a breeding ground for American fascism. “The idea there is to get that training and that experience, because of course the far-right people feel like there’s a civil war coming,” he...