In a commentary on the ministry website Eliasson points out that the negotiations have lasted two years while the fighting has continued, which has led to an unacceptable humanitarian situation.
The Swedish foreign minister says he hopes the other rebel groups will also sign the agreement. He adds that Sweden is already providing humanitarian aid to Darfur, and is ready to help in reconstruction.
Under the agreement, United Nations peacekeeping forces will take over from the current African Union force. The accord also offers a referendum on the future status of the region, obliges Khartoum to disarm the notorious Janjaweed militia, and provides for rebel movements to be represented in the Sudanese government.
The conflict in Darfur has killed tens of thousands of people and driven more than 2 million from their homes.