Dar Es Salaam: US President George W. Bush is discussing Africa's crises and a mounting terrorist threat on Sunday during his tour of the continent.

Bush will also focus attention on what is seen as a growing radical Islamist threat in Kenya and the Sahel region by meeting families of victims of an Al Qaida attack in 1998.

Jendayi Frazer, the top US diplomat for Africa, said Bush would discuss the bloody post-election crisis in neighbouring Kenya, Chad and Zimbabwe.

On his first stop in Benin on Saturday, Bush declared support to a power-sharing deal in Kenya to end violence since the disputed re-election of President Mwai Kibaki.

He will send Secretary of State Condoleezza Rice to Kenya on Monday to add momentum to mediation by former UN chief Kofi Annan.

Rice's mission was "aimed at having a clear message that there be no violence and that there ought to be a power-sharing agreement," Bush told reporters in Benin.