Former prime minister Alexis Tsipras formally re-entered the political realm Tuesday, heralding a new party named Greek Left Alliance (ELAS) that he said offers a “compass for a New Greece” and a “new patriotism inextricably linked to social justice.”

Political attention in Greece is focused on the launch of a new party by former prime minister Alexis Tsipras this week.

Former prime minister Alexis Tsipras is set to present the name and founding declaration of his new party on Tuesday, calling for the unity of progressives and the Left, in a…