How does it have less range if it can hit anywhere in the world in an hour... How much more range does it need? Why would you need more range?
didn't say from where.
The circumference of the earth at the equator is 24,901.55 miles (40,075.16 kilometers).
So assuming the worst case scenario a target is 20,000 km away. That thing would take around 3 hours 20 mins to get there. So obviously they're counting potential launch positions such as fleets distributed around the world.