Carriers and carrier task forces probably do not figure as much in current and future global warfare, except as mop-up assurance the "the other guys" are well and truely dead.
Carriers are wonderful for carrying out disaster relief and other showings of the colors. Their accompanying task force vessels enhance that capability.
Carriers on current and near-term future deployments also serve exceptionally well in keeping braggart Navy and Marine Corps aviators out of bars.
IMHO the Norks are not going to invade or otherwise try to totally blow up ROK, Japan or any other place. They appear to be so close to internal collapse that saber-rattling to try to extort food, energy and capital is moreso a death rattle. Further, IMHO, the Chinese are starting to act like the Soviets did towards Cuba - cutting aid and financial support as well as political championship. While China may have the natural resources and manpower, I do not see them being able to convert their ligt manufacturing and plastics industry into the heavy industry needed to support a major East Pacific war, let alone a global war.
I'm not sure but the odds seem to be that the Russians, now that they have lost their sattelites, both do not have the industrial capacity or the desire to convert from peacetime capitalistic industry to wartime industry.
The Norks are much like the Iranians, except there is no Israel nearby to nuke them into a glass-covered desert.
I'm not thinking that the current administration would ever consider this, but some future administration is going to finally decide if we are going to continue being the international Bruce Lee who beats up every bully, but does not actually kill them, or if we are going to go full Chuck Norris and rip their heads off. Either that or join the EU as a junior partner.
stay safe.