Union minister for road transport and highways Nitin Gadkari inaugurated the tallest national flag of 418 feet at Attari chief post on India-Pakistan international border.The flag at the Attari border, famous tourist destination and known for the beating retreat ceremony, will have the surveillance system that will help the BSF keep vigil along the international border.Earlier, there was a 360-foot flag that was installed in March 2017 at a cost of ₹3.5 crore