AMSTERDAM - Naomi Campbell testifies today at the war crimes trial of former Liberian leader Charles Taylor, who prosecutors say gave a 'blood diamond' to the British supermodel.

The prosecution at the Special Court for Sierra Leone summoned Campbell to back their allegations that Taylor received diamonds from rebels in Sierra Leone, which they say he then used to buy weapons during a 1997 trip to South Africa.

Defence lawyers for Taylor have sought to delay the testimony, arguing the ex-Liberian president's right to a fair trial is being denied because they have not seen the full intended statement by Campbell. The court was to rule on it yesterday.

Campbell's testimony has sparked intense media publicity, with more than 200 journalists hoping to attend. But Campbell, an unwilling participant, won a court ruling banning photos of her entering or exiting the court on concerns over her security. Prosecutors have also called actress Mia Farrow to the stand for Monday.