On his first week back from his whirlwind trip across Africa, President George W. Bush will have a lot of explaining to do. Visiting UN Secretary General Kofi Annan will want to know what the U.S. president is prepared to do in war-torn Liberia. Annan and many in Congress, as well as AIDS activists both here and in Africa, also want to know whether Bush is prepared to push Congress to approve the full US$3 billion dollars for fiscal year 2004 as the first instalment of his $15 billion emergency program to fight AIDS in Africa.