Mexico has sent hundreds of police to its southern border as a caravan of thousands of Central American migrants approaches from Guatemala.
Mexico sends police to southern border
The group of Salvadoreans, Hondurans and Guatemalans say they are fleeing violence and poverty.
Beyond that, this situation catches Mexico at a strange time. One administration, that of President Enrique Peña Nieto, is leaving office and the new one, of President-elect Andres Manuel Lopez Obrador, isn't yet through the door.
Migrant caravans of this type are nothing new, they quite often take place. However, this one, coming as it does so close to the US mid-term elections in November, has taken on a highly political dimension, to that point that President Trump has threatened to use the military and close the US southern border.
