Following a five-hour meeting with the president, relatives of the students abducted by police in late September in the southwestern city of Iguala dismissed his efforts to find the missing and said their patience was running out.
The disappearances have become arguably the sternest challenge yet to face Pena Nieto, who took office two years ago vowing to restore order in Mexico, where close to 100,000 people have died in violence linked to organized crime since 2007.
Initial testimony from investigators suggested that the students, who belong to an all-male leftist college, had a history of conflict . . .
