Alexis Tsipras is a Greek politician who is the founder and leader of the political party ELAS and who served as Prime Minister of Greece from 2015 to 2019 as a member of Syriza. A prominent leftist figure, Tsipras served as the leader of the Greek political party Syriza from 2008 to 2023. Tsipras is the fourth prime minister who has governed in the course of the 2010s Greek government-debt crisis. Originally an outspoken critic of the austerity policies implemented during the crisis, his tenure in office was marked by an intense austerity policy, mostly in the context of the third EU bailout to Greece (2015–18).