Archnationalist

Mr. Kaczynski, a conservative, attracted strong criticism inside and outside Poland for strong anti-Russian tones and archnationalist policies when he shared power with his identical twin brother, Jaroslaw, who was prime minister from 2005 to 2007.

Even in a region where former archnationalists and guerrilla fighters have sought to recast themselves, Mr. Vucic’s transformation from staunch Milosevic ally to ardent proponent of the West is viewed as remarkable.