President Bush welcomes Nigerian President Olusegun Obasanjo to the White House Thursday for talks expected to focus on the situations in Sudan and Ivory Coast.

Mr. Obasanjo is current chairman of the African Union, which has been working to end internal fighting in both countries and the humanitarian crisis in Sudan's Darfur region where 1.6 million people have been driven from their homes.

The United Nations says the war between rebels and pro-government forces in Darfur has also killed some 70,000 people.

The White House says Mr. Bush and Mr. Obasanjo plan to discuss the A.U. role in regional defense and security issues.  It says the two leaders will also review U.S.-Nigerian relations and opportunities for trade and investment.

Later in the day, Mr. Obasanjo will meet with U.S. Secretary of State Colin Powell.

Some information for this report provided by Reuters.