I think the federal government should start an offensive campaign against BH, they should deploy military to all the affected state going from village to village in the affected areas, people must identify themselves and their occupation in those state.Seriously offensive action against BH will stop all these incessant bomb attack.They wont have time to plan any attack because they will be on the run.Government should deply legions of soldiers to all the northern states, they should go from street to street and house to house till all this evil people are fished out. I think these will work , if it doesn't at least it will stop the bomb attack because they wont have time to plan such attack.