For the past fortnight, Denis Pushilin, the prime minister of the temporary government of the self-proclaimed People's Republic of Donetsk has presided, at least ostensibly, over a pro-Russian uprising that has seized town halls, police stations and other buildings in about ten towns across eastern Ukraine. Few people in Donetsk had heard of the diminutive, smartly dressed 32-year-old businessman until he emerged as a leader of the group that occupied the regional administration building here two weeks ago. Born and raised in Makeyevka, just outside Donetsk, he graduated from the local engineering college and came out of his national service...