In a significant political development, Lithuania's ruling Social Democrat party announced that Mindaugas Sinkevicius is set to become the new Prime Minister.Sinkevicius will succeed Inga Ruginiene, who has served in the role since last year. The decision was made public via a Facebook post from the party on Tuesday.The leadership change follows the Social Democrat party's decision to remove the populist Nemunas Dawn from the coalition government, citing the antisemitism conviction of its leader. (With inputs from agencies.)