Are you stupid or incapable fathomiing of what you are talking ? IDIOT america and russia have 95% of the nuclear arsenal of the world with highly potent delivery systems, They will HIT back and wipe out India from map from their megaton class nuclear weapons by launching missiles from air, land, or sea or froom outer space.
US ICBM missiles sea based Trident II and land based Minuteman missile will wipe out India from the map. A single missile has 3.8 megatons of nuclear power , enough to wipe out 8 cities of India completely, This missile breaks into 8 different independent smaller missiles and hit at 8 different city targets.
You think USA is a a weak country ? They have built their nuclear power ot counter USSR which had 9000 nuclear stockpiles, then what is bloody India ??????
Additinally, USA has developed very high energy laser missile destroying systems, Indian and other third world ICMBs will likely be destroyed midair or at launch. They have a Early Warning Systems in place developed 30 years ago which will warn of missile launch from India right when it is carried out and then defence and retaliatory action in place. IMAGINE THE RETALIATION OF USA, THE COUNTRY OF DEADLIEST NUCLEAR FORCES.
Wake up from your grandiose illusions and dont think of attacking USA. No one will match USA's arsenal including China in decades.
Trust me USA will blast you to hell. They are Americans , revolutionaries by nature, will not take your idiotic intentions.