Anchor Marco Werman speaks with Julie Heckman of the American Pyrotechnics Association to find out why port restrictions in China are causing a shortage of fireworks here for Fourth of July celebrations.

Morgan Tsvangirai

Zimbabwe's political crisis continues today. The African Union is urging the two sides to talk but opposition leader Morgan Tsvangirai says he won't negotiate a government of national unity unless he is recognized as the country's rightful leader. The World's Jeb Sharp has an update.

Anchor Marco Werman talks about the limited options for Zimbabwe with Martin Meredith. Meredith is the author of the book, "Mugabe: Power, Plunder and the Struggle for Zimbabwe."

A German company that supplies the special paper for Zimbabwe's banknotes has bowed to pressure. It's announced that it will stop doing business with Robert Mugabe's government.

Correspondent Matt Guttman reports on a Palestinian bulldozer operator who went on a rampage today, killing at least three people and injuring dozens on a busy street in Jerusalem.

Video: end of the rampage

For today's Geo Quiz, we're looking for the capital of Paraguay.

The answer to today's Geo Quiz is Paraguay's capital, Asunción. The World's David Leveille profiles the latest diplomatic initiative by the US Ambassador to Paraguay. It's a CD of Paraguayan folk songs sung in the indigenous language, Guarani.

Seun Kuti's father was the late Nigerian afrobeat innovator Fela Kuti. These days Seun Kuti performs with his dad's band Egypt 80. Anchor Marco Werman brings us this profile of Seun Kuti.

John McCain was in Mexico today to boost his foreign policy credentials with American voters. Mexico provides the perfect backdrop to discuss immigration and free trade. The World's Carol Hills speaks to Victor Hugo Michel of Mexico's Milenio newspaper about the visit of the American presidential candidate.