Gunmen disguised as police opened fire on boxing fans at a Dublin hotel Friday, killing one man and wounding two others in an attack that could reflect tensions within Ireland's top cocaine-smuggling gang. Fans attending the weigh-in ceremonies for a Dublin boxing event fled in terror as two gunmen wearing police uniforms opened fire inside the lobby of the Regency Hotel. Witnesses inside the ballroom hosting the ceremony saw two other men in the crowd, including one disguised as a woman, running away holding handguns. It wasn't clear whether they opened fire, were working as scouts for the other gunmen,...