The deal was intended to allow safe passage for people leaving battle zones, protect relief workers and to prevent civilians being used as human shields, but according to Mr Youssef it has not brought about “tangible change”.

Mr Youssef added that allowing Khartoum airport to accept humanitarian aircraft to help Sudanese civilians would be an “immense game-changer”.

He said there were injured people in Darfur who had “no access to hospitals” and “basic services”.

Meanwhile, Kenya's President William Ruto has spoken out against the fighting in Sudan, telling the conflicting parties to "stop the nonsense".

Conflict between the military and the rival paramilitary group the Rapid Support Forces (RSF) broke out in Sudan on 15 April, which has so far led to the death of more than 800 civilians, according to the Sudanese doctor’s union.