KINSHASA (Reuters) - Up to 200 people were missing and feared dead after a ferry was destroyed by fire on the mighty Congo River in the northwest of the Democratic Republic of Congo, U.N. officials in the country said on Saturday. A U.N. spokesman said aid workers had rescued 301 people out of about 500 passengers, many of whom scrambled to jump out of the boat as it fell apart engulfed by flames. He said the disaster happened last Monday, but the potential scale of the tragedy only became apparent on Friday when officials finally reached survivors sheltering in...