At least 21 airports across northern India were shut down on Thursday (May 8 ), a day after Indian strikes on multiple targets in Pakistan in relation to the April 22 terrorist attack on tourists in Kashmir region.<br /><br />WATCH MORE: https://thestartv.com/c/news<br />SUBSCRIBE: https://cutt.ly/TheStar<br />LIKE: https://fb.com/TheStarOnline