U.N. Secretary-General Kofi Annan on Saturday called for widening the responsibilities of African Union peacekeepers in Sudan's troubled Darfur region, saying the troops need to take a larger role in protecting the region's embattled civilians. «The security situation in Darfur is not acceptable and as long as the situation there is not acceptable then one has to do more,» Annan said at Khartoum airport after a daylong visit to the region, according to AP. Annan said African Union troops were doing a competent job, but would need a broader mandate and more resources to provide protection to the hundreds of thousands of civilians displaced by more than two years of ethnic violence in Darfur. Annan spent the day in Darfur where he visited the vast Kalma refugee camp in Nyala and a rebel held area, Labadu, some 70 kilometers (40 miles) east of Nyala, where the security situation remains tense. --More 2333 Local Time 2033 GMT