United Nations human rights monitors have accused Sudan's military of dropping bombs on villages in north Darfur, killing and injuring civilians and driving many from their homes.
The UN human rights spokesman, Jose-Luis Diaz, said government aircraft had carried out indiscriminate aerial bombardment as part of a campaign against movements that have not signed the peace agreement.
Separately, Bono has condemned Sudan over the crisis in Darfur, describing the behaviour of the Khartoum government as an affront to decency.
Speaking to RTÉ News in London last night, Bono said the Sudanese government's refusal to allow UN troops into Darfur had 'broken every shred of dignity possible in a government'.
With the Islamic holy month of Ramadan approaching in the next few days, the UN is urging government forces, rebels and militias in western Sudan to allow relief workers to operate freely in the region.
But with two and a half million people displaced by the fighting, the Sudanese government is still refusing to allow 20,000 UN troops to deploy in Darfur when the African Union mandate there runs out at the end of this year.
The U2 star pointed up the failure of the African Peer Review Mechanism, which is a voluntary agreement between members of the AU to maintain and police standards of good governance across the continent.
Bono said it had failed with Zimbabwe's President Robert Mugabe and that it was now failing in Sudan.
Bono was speaking at a London Fashion Week event hosted by Italian designer Giorgio Armani.
The fashion show was aimed at promoting Bono's Red label, which encourages big business and its customers to contribute to the Global Fund to Fight Aids, TB and Malaria.
