 Bolivia's capital, La Paz, saw intense political drama last night. The country's former army chief led armored vehicles to ram the doors of the government palace. What followed was several hours of confusion about who was actually in control of the government. But Bolivia's president, Luis Arce, stood firm, and a new army chief is in place now. To get a handle on the rift in Bolivia, we got in touch with Michael Parleberg, a professor of Latin American politics at Virginia Commonwealth University.