Directions: Head south from Brazil and cross Bolivia. That should land you in Paraguay. Paraguay's one of two landlocked countries in South America. In case you're wondering the other one is Bolivia. But were zeroing in on Paraguay...its in the heart of South America -- sometimes called the Corazón de América.

We're looking for the name of the country's largest city, a city of 1.8 million inhabitants. The US Embassy is located there, not far from the banks of the Paraguay River.

There's an unusual diplomatic initiative underway there we want to tell you about. There's no further diplomacy or tricky negotiations involved, just name Paraguay's capital if you can.