Sudanese President Omar al-Bashir has signed a framework ceasefire deal with one of Darfur's main rebel groups, the Justice and Equality Movement (Jem).

The power-sharing agreement in Qatar is seen as an important step towards peace, though the other main rebel group has refused to enter talks.

The International Criminal Court (ICC) last year issued a warrant for Mr Bashir's arrest for war crimes in Darfur.

But Qatar has not signed the ICC charter, which obliges member states to arrest indictees on their territory.