On the twenty-third of January, Juan Guaido, President of the National Assembly of Venezuela, proclaimed himself Acting President. He was almost immediately recognized by more than fifty countries around the world, the most important of which is, of course, the United States. 

So, how is Nicolas Maduro still hanging to power?

Sources:

https://www.washingtonpost.com/world/how-nicolas-maduro-has-been-able-to-cling-to-power/2019/03/08/896cf3aa-41bc-11e9-85ad-779ef05fd9d8_story.html?utm_term=.ee711a55c39d