A doctor convicted of conspiring to treat injured al-Qaida fighters was sentenced to 25 years in prison, with the judge reasoning that a sentence to deter others was needed because terrorists cannot carry out their deadly aims without help. US District Judge Loretta A. Preska noted Dr. Rafiq Sabir, 53, showed no remorse after his May conviction for conspiring to provide material support to terrorists by agreeing to treat injured al-Qaida members so they could return to Iraq to battle Americans. The judge said there was "no reason to believe that this defendant has abandoned any criminal intentions." She said terrorism offenses were among the most serious crimes prosecuted and required stern punishments. "If not for assistance to terrorists, then terrorist acts would not take place," she said.