Honestly I hate to say it but I don't think theres restaurants as soon as you pass security on terminal 5. There is a food court right BEFORE the security check point, it gets pretty full and since you mentioned air india im guessing you will have to be in the airport around 2 or 3ish and thats rush hour for all flights so their will be long lines. On the other side of security were the gates are at theres usually little food stands that sell salads and sandwiches, refreshments etc and one or two mini bars.
I suggest that if you want to eat in the airport I would just check in my baggage at air india, go to the food court and then go thru security. Don't go thru security and come back out again because you will have to get in line again to go threw security and the lines get pretty long!..
I cant really gove you an answer,but what I can give you is a way to a solution, that is you have to find the anglde that you relate to or peaks your interest. A good paper is one that people get drawn into because it reaches them ln some way.As for me WW11 to me, I think of the holocaust and the effect it had on the survivors, their families and those who stood by and did nothing until it was too late.