The capture by Mexican marines of drug lord Joaquin "Shorty" Guzman has been lauded as "an impeccable operation". The BBC's Mexico correspondent Will Grant looks at the significance of his arrest for the country's president, Enrique Pena Nieto.
It is hard to overstate just how important a scalp Guzman is for President Pena Nieto.
The world's most wanted drug trafficker - perhaps the world's most wanted man - had evaded the joint efforts of the Mexican and US security forces to apprehend him for 13 years.
Not since January 2001, when he walked out of the front door of Puente Grande maximum-security prison - or escaped in a laundry basket if popular myth is to be believed - has Joaquin Guzman seen the inside of a jail or courtroom.
Instead, he has been able to control his vast criminal organisation, the Sinaloa Cartel, with total impunity from his north-western stomping ground, where he was well protected by a network of corrupt police forces, political contacts and loyal communities.