Inter Press Service: U.N. Secretary-General Ban Ki-moon returned from Pakistan Monday calling the floods there the worst disaster he has ever witnessed and urging the world community to speed up assistance to the Pakistani people. Ban, who made a helicopter flight over four districts in Punjab, one of the most populated and badly affected areas, described the scenes as “heart wrenching”, and said he would never forget the destruction and suffering in the flood-hit areas. He announced a further 10 …