Tunisia has issued an international arrest warrant for ousted president Zine El Abidine Ben Ali. He fled to Saudi Arabia after street protests against his government over unemployment, price hike and corruption.Justice Ministry said Ben Ali, his wife Leila Trabelsi and other members of his once all-powerful family were accused of illegally acquiring assets and transferring funds abroad during the veteran leader's 23-year regime.The announcement came as tensions mounted in the north African state ahead of a critical cabinet shake-up expected to be announced today. Clashes continued in Tunis at a protest calling for a clean break with the old regime.Riot police tear-gassed protesters who have been rallying in the main government quarter in Tunis for four days.