MAPUTO (Reuters) - Mozambique police have arrested four men accused of running a kidnapping ring behind more than 20 abductions in the capital Maputo in the past year. The alleged ring-leader, Bakhir Ayoob, is the son-in-law of Mohamed Bachir Suleman, a wealthy businessman in the city. Washington has branded Suleman a drug kingpin and in 2010 banned U.S. companies from having any financial dealings with him. Wealthy Muslims have been the main targets of the kidnappings, which began in November. All those abducted were released after ransoms were paid. ...