Bombing large group of people

[Iris]

3/15 Sydney car explosion in tunnel
http://www.dailymail.co.uk/news/article-...-road.html

Syrian tunnel warfare:
3/15 https://medium.com/war-is-boring/syrian-...47034926dd
5/15 http://www.bbc.com/news/uk-33393468
7/12 http://www.bbc.com/news/world-middle-east-33499609

4/24 Wartime scientist revisits secret Drakelow Underground Factory
http://www.dailymail.co.uk/news/article-...bombs.html

6/8 Israel built and exploded a 'dirty bomb' with nuclear material inside to see what would happen
Read more: http://www.businessinsider.com/report-is...z3gaPosbPk

July 7 many news articles of 10th anniversary of London train tunnel boming
http://www.bbc.com/news/uk-33393468