VIENNA (Reuters) - U.S. and Austrian lawyers have filed a lawsuit demanding Thailand, U.S. forecasters and the French Accor group answer accusations they failed in a duty to warn populations hit by December's Tsunami disaster, a lawyer said Monday. The lawsuit was filed Friday at a New York district court on behalf of tsunami victims by lawyers including U.S. attorney Edward Fagan, internationally renowned for 1990s lawsuits against Swiss banks over Holocaust-era accounts. It demanded an account of their actions on Dec. 26. "We expect a hearing within 30 days," Austrian lawyer Gerhard Podovsovnik told Reuters. "We don't...