So how long ago were US long-range missiles used to attack Russia?

Because that's what seems to be claimed here, that Russia are retaliating for that.

How long does it take a ship to travel to a 'suspicious' site like this?

versus, how long does it take to intercept the nearest Russian ship, and escort it away as a spy ship and 'potential saboteur'?

The info that the Biden administration would greenlight this, should have been known in Moscow for weeks now. I assume the news arrive later only for us - the public.