The current situation is not a consequence of modern warfare. It’s a consequence of the many layers of hubris, stupidity and arrogance uttered by incompetent people who put up a show for a shrinking audience.
The stupidity of the leadership in the USA is perfectly broadcasted in full view, for everyone to see, during Trump cabinet meetings, where he is undeservedly praised by weaker men and women. It shows all the weaknesses of the USA in just 5 minutes of watching that cringefest. You don’t even need spies.