RT There's an E-6B Mercury off the east coast near DC. I looked because I would expect them to pop up if he tests positive. It's a message to the small group of adversaries with SLBMs and ICBMs. pic.twitter.com/3ta9PmPxZD— Tim Hogan (@TimInHonolulu) October 2, 2020
Remember that China and India have a no first use nuclear policy. And Russia and the DPRK will only use theirs if attacked.
There is no reason to expect any of these powers to preemptively strike the US