Why? ICBMs can be launched and strike their targets within 15 minutes.
Even when slow, a relatively small, high altitude, no refueling, low heat signature plane with a small tactical weapon could be interesting for... reasons.
You underestimate the value and strategic purpose of second strike. https://en.wikipedia.org/wiki/Second_strike
By definition fired after you've already been hit with nuclear weapons.
Second strike is the deterrent measure to nuclear war, so why would improved second strike capability be a source of fear?
Even when slow, a relatively small, high altitude, no refueling, low heat signature plane with a small tactical weapon could be interesting for... reasons.
You underestimate the value and strategic purpose of second strike. https://en.wikipedia.org/wiki/Second_strike
By definition fired after you've already been hit with nuclear weapons.
Second strike is the deterrent measure to nuclear war, so why would improved second strike capability be a source of fear?