Kenya’s High Court ruled Friday that the East African nation cannot deploy 1,000 police officers to help Haiti fight criminal gangs, sending a devastating blow to supporters of an armed intervention into the country to help its national police. The High Court in Nairobi made the decision Friday after hearing a constitutional challenge to the plan, which had the support of the United Nations. The court ruled that only members of the military can be sent out of the country to participate in foreign operations like the one proposed for Haiti. Under Kenyan law, police officers can only be deployed…