Venezuela was once the wealthiest country in South America — Here's how it descended into turmoil

President Nicolas Maduro faces a challenge from opposition leader Juan Guaido, who's attracting more and more support as the crisis drags on, both internationally and from Venezuela's military ranks. At the same time, inflation is spiking and unrest is reaching a fever pitch.

Here's how we got to this point.

Venezuela's Juan Guaidó is going up against Maduro's regime — Here's how he got to this point from CNBC.