French President Nicolas Sarkozy warned on Friday that tax havens will be shunned by the international community, naming countries he said had not done enough to end banking secrecy. \"We don\'t want any more tax havens. Our message is clear,\" Sarkozy said at the end of the G20 summit in Cannes. Countries that don\'t share tax information \"will be shunned by the international community,\" he warned.