Ressam at times defiant in 2 days of questioning By Mike Carter Seattle Times staff reporter After more than a year of cooperating with federal prosecutors, Ahmed Ressam has become a sometimes difficult and defiant government witness. Ressam was at times surly and evasive during two days of closed-door questioning this week in Seattle by German lawyers who need his help prosecuting Mounir el-Motassadeq, a Moroccan accused of helping the Sept. 11, 2001, hijackers. Ressam, convicted of conspiracy to commit an act of international terrorism, might be endangering his deal with federal prosecutors to serve as few as 27 years...