Oscar Perez posted videos of a shootout on social media.
Venezuelan authorities say they arrested five "terrorists" after the shootout.
President Nicol?s Maduro is hoping the "petro" will help Venezuela get around U.S. sanctions.
A former political prisoner and a human rights researcher explain the current crisis in Venezuela.
The South American country has roughly $140 billion in outstanding debt.
Spanish officials said intelligence suggests that groups in Russia and Venezuela spread misinformation before and after Catalonia's referendum.
Venezuelan President Nicolás Maduro called for the debt-ridden country's finances to be restructured.
Venezuela and its entities already missed nearly $600 million in payments this month.
Two federal judges recently halted the latest iteration of restrictions, which broadly suspend travel for most nationals from eight countries.
The latest version of President Donald Trump's immigration restrictions has been temporarily blocked by a federal judge.
President Donald Trump said "a possible military option" might be used to deal with Venezuela.
The assembly came to power through a vote that was heavily contested by the opposition.