Its a huge development. ICBMs are like muscles that you show off to the world hoping you would never have to use them. India has today knocked on the door of P5 + Israel - the high table. Pakistan is an albatross around India's neck propped up by America till the 80s and China in the late 90s and early 2000s. Today India has demonstrated capability which proves that its strategic interests and capability to protect them go beyond Pakistan stretching to China/ASEAN. On the other hand, Pakistan is hamstrung by Chinese unwillingness to transfer anything that hits beyond India. A little more range would mean Pak can hit Israel. This crosses a red line in the US which China, for reasons best known to itself, doesn't want to cross.