Four men were arrested in New York last night on charges of plotting to blow up two synagogues and shoot down military planes at a nearby Air National Guard base. The four were nabbed in a sting operation that involved them planting what they believed were explosives at two Bronx synagogues. An informant for the FBI also provided the accused with an inactive missile. All are Muslims and, according to Raymond Kelly, New York’s police commissioner, expressed a wish to engage in jihad.