How Venezuela got here: a timeline of the political crisis

Venezuela plunged deeper into political turmoil this week when Juan Guaido, the leader of the opposition-run congress, declared himself interim president, the boldest challenge to socialist leader Nicolas Maduro's rule in years. Below is a timeline on how Venezuela's political crisis has evolved since the death of socialist leader Hugo Chavez, against a backdrop of hyperinflationary economic collapse in the OPEC nation.