The Inter-American Court of Justice has delivered a sharp rebuke to the Mexican government, accusing it of inaction in preventing, investigating and prosecuting the murders of young women in the border state of Chihuahua. In a ruling released this week in the case of three young women whose bodies were found in a cotton field in Ciudad Juárez in 2001, the court ordered Mexico to solve those cases and to overhaul its procedures for investigating the murders. Rights groups say as many as 500 women have been killed since 1993.