Mexico: students strike as 43 trainee students still missing University students in Mexico have begun a 72-hour strike following the disappearance of 43 trainee teachers in the south of the country over a month ago. The striking students are demanding that authorities step up efforts to find the missing trainees, who went missing after a protest turned violent, and who are feared dead. As a search for them continues, the fugitive mayor from the southern city of Iguala, where the trainees went missing, and his wife have been arrested. Mass graves have been uncovered but none of the bodies found appears to belong to the students whose relatives have met Mexico's president and dismissed his efforts to find their loved ones.