such a huge country cannot be guarded by any means and no polic can keep an aye on every person, so lets hit the root... lets destruct the bangladesh and pakistan that much that they should be 50 years behind.... lets destroy their each n every thing and make them so poor that they should only think for food and water and nothing else. Thats the only solution, and I am afraid that if a retaliation take time then its very dangerous. I give an example.... these nebhouring countries are thinking that attacking India will make it weaker, fine they are true if we don't do it, but when CAT is also beated in a closed room then it attacks and kill the person out of fear that if it wouldn't then it will be dead. So beware Pakistan and Bangladesh, that the money you are getting from will not come and save you, but the repucussions will be bore by you.