The biggest threat to this country is the hatred between different communities and people belonging to different states and regions. The politicians, especially the regional parties are responsible for it. In these days of coalition govt anybody with money and muscle power can form a political party and are in a party in any govt. They have no national interest and are very selfish. These persons/parties are the real enemies of the society/country than the so called terrorists. Yes, the so called national parties are equally responsible for the current situation. Unless, something is not done to arrest this tendency, soon there will be riots, chaos, etc To a certain extent educated people are also responsible for this.