U.S. officials have wrapped up an exercise to prepare for the possible mass flow of migrants arriving by boat from Cuba or another Caribbean nation. From Miami, VOA's Brian Wagner reports that the drill was intended to test existing U.S. resources to combat illegal migration, as well as drug and people smuggling.

The International Organization for Migration says as many as 1 million Iraqis could be displaced this year, in addition to the 1.4 million people already displaced within Iraq.

South Africa has one of the world's highest rates of HIV infection. New research, led by Brown University professor Mark Lurie, shows that the movement of workers between urban and rural areas played a key role in the spread of the epidemic. Results are published in AIDS.

Sectarian violence and crime are forcing more than 1,000 Iraqis to flee their homes daily and aid resources are inadequate to help them, an international migration agency reports.

The International Organization for Migration reports thousands of people who fled violence in central Iraq for the relative safety of a poor southern region are barely managing to survive. Lisa Schlein reports for VOA from IOM headquarters in Geneva.