At some point it will all happen.
Nuclear and EMP weapons cannot exist without someday being used, tommorow? 11 years from now? 35 years? at some point weapons get used, the world has had only one atomic war in history, but history isn’t over, and the weapons are more common and routine than in the first war.
An EMP weapon directed at the United States if it were effective (Russia, China, not some toys from Korea) would shut down the world economy. It’s not going to happen.
Be more worried about K9 Flu. I assume you read about it...