Scores killed in shelling and airstrikes across Khartoum as Sudan's conflict intensifies / Sudan conflict: 'There cannot be a military solution to this war' / Sudan's warring forces are escalating attacks and outsiders are `fueling the fire,' warns UN Chief / Push for diplomatic action on Sudan conflict / Over 20,000 dead in Sudan conflict, says WHO chief / Russian, Sudanese officials talk conflict settlement in republic -- Foreign Ministry / Fires used as weapon in Sudan conflict destroyed more towns in west than ever in April, study says / Increasing number of villages torched across Sudan shows conflict is intensifying - report / Sudan conflict deepens as al-Burhan, Hemedti's foreign backing soars