New Delhi, Nov. 18 -- On 10 November, after nearly a decade, India witnessed its first major terror attack in the heartland, beginning in the national capital, killing 13 people and injuring more than 20. The largest bomb strike since the 2006 Mumbai train bombings has blurred what were once clear red lines on terrorism against India. The Red Fort blast must be viewed as a serious warning-possibly the beginning of a new phase of jihad targeting India-marked by several significant shifts in the terror cycle.

A New Shift in Terror Strategy

Three key shifts emerge from the horrific attack in Delhi.

First, terror "gloves are off." The audacity to strike India's heartland-a pattern common in the early to mid-2000s-had diminished after 2014 ...