In 2000, Arnhim Eustace became Prime Minister after taking over the leadership of the NDP following Mitchell's retirement; he was defeated a year later by Ralph Gonsalves of the Unity Labour Party (successor party to the SVLP). Gonsalves—a left-winger known in the country as "Comrade Ralph"—argued that European nations owe Caribbean nations reparations for their role in the Atlantic slave trade. Gonsalves won a second term in 2005, a third in 2010, and a fourth in 2015.