The fatal shooting in eastern Poland of a Russian artist known for his caricatures of Russian President Vladimir Putin was likely politically motivated, Polish Prime Minister Donald Tusk said on Wednesday. “All indications are that this is a political murder,” Tusk said of the killing of Semyon Skrepetsky, whose real name is Robert Kuzovkov. “If it was commissioned by Russia, then this is also a very serious matter with an international dimension.” According to Polish officials, Skrepetsky was...