There also weren’t reconnaissance satellites in 1941 that would detect some fleet leaving Vladivostok (or some western Chinese port). There weren’t over the hor

There also weren’t reconnaissance satellites in 1941 that would detect some fleet leaving Vladivostok (or some western Chinese port). There weren’t over the horizon radars, or airborne interceptors with radar that can see hundreds of miles. It’s a completely different scenario in almost every way. Finally, no current potential enemy state has the kind of aircraft carrier fleet needed to perform that the of attack. The U.K. and China both have two active carriers, but the Chinese are still training up. The Japanese launched about 300 planes from six carriers. Nowadays, any surprise attack on the United States would be a counterforce launch of hundreds of ICBMs and SLBMs with at most twenty minutes of warning to launch a response, and hours to launch a second strike, assuming command and control networks remained active.