Plagued by violence and drought, Somalia is mired in a humanitarian crisis forgotten by most of the world, a top U.N. official said on Friday as he led the world body's first high-level visit in a decade. Jan Egeland, the U.N. undersecretary-general for humanitarian affairs and humanitarian relief coordinator, started a three-day trip to raise awareness of Somalia's problems by visiting the capital of Somaliland, an autonomous enclave which is unrecognized internationally.