Rowling demands action in Darfur
An open letter signed by 14 authors, including best-selling US writer Judy Blume and Michael Morpugo, declares: "It is time to change the narrative."
"The world needs to wake up. For too long it has let these children suffer. Our politicians need to act on Darfur."
The conflict in Darfur, a region of Sudan, is now in its fifth year.
More than 200,000 people have died in Darfur since rebels took up arms in 2003, according to the UN. Two million have fled their homes.
'Caught in crossfire'
Sunday marks Global Day for Darfur, with protesters around the world calling on the international community to take further action to end the crisis.
"The children of Darfur didn't ask for this war, but are living their days caught in the crossfire of reverberating bullets," the open letter continues.
"They must be allowed to be children again. Despite the daily terror they face, they still have hopes and dreams.
"The world needs to act now to give the children of Darfur a future."