Given the following passage "Josip Broz Tito (Cyrillic: , pronounced [josip broz tito]; born Josip Broz; 7 May 1892[nb 1] 4 May 1980) was a Yugoslav revolutionary and statesman, serving in various roles from 1943 until his death in 1980. During World War II he was the leader of the Partisans, often regarded as the most effective resistance movement in occupied Europe. While his presidency has been criticized as authoritarian, and concerns about the repression of political opponents have been raised, Tito was "seen by most as a benevolent dictator" due to his economic and diplomatic policies. He was a popular public figure both in Yugoslavia and abroad. Viewed as a unifying symbol, his internal policies maintained the peaceful coexistence of the nations of the Yugoslav federation. He gained further international attention as the chief leader of the Non-Aligned Movement, working with Jawaharlal Nehru of India, Gamal Abdel Nasser of Egypt and Sukarno of Indonesia.", answer the following question. Note that the answer is present within the text. Question: Who is the leader of a tribe?
A:
chief