ATHENS, Jan. 5 (Xinhua) -- Former Greek Prime Minister Costas Simitis passed away at the age of 88 on Sunday at his country house near Athens, Greek national news agency AMNA reported.
The government has declared four days of national mourning to honor the leader who played a pivotal role in Greece's entry into the eurozone in 2001.
Simitis served as prime minister from 1996 to 2004, championing economic
