China and Russia would have surrender if they could not move, shoot or communicate with their Armed Forces - not so for the USofA. Our capacity to "disarm" and decouple Enemy Governments (read Russia + her Allies and China + her Allies), they will accept cease fire and surrender terms; for China proposed Terms are a break up into 9 differnt nations under US-UN Supervision.
The US has the capacity to protect vast numbers of electronic components, and we also have the ability to produce electronic components after an EMP war which would destroy Asian production. Can you imagin a world where the US becomes a power broker in Electronic Components which are worth their weight in gold one the production facilities and trade routes destroyed and disrupted? We could re-supply ourselves (economic boom) and the Friends/Allies of the US.
EMP is a way to win wars without actually killing populations and armies or fighting.
Stop worrying.
Say, you're not employed as an investment counselor are you?
If you were I'd take your word and move my entire investment portfolio into your capable hands. Then I could stop worrying. Of course taking the word of a perfect stranger would mean that I was ready for padded room.