As he writes foreign edition, there are five options for how the US can react to the use of nuclear weapons by the Russian Federation against Ukraine:
- retaliatory strike against Russia, including Moscow;
- an attack on Russian troops on the front line in Ukraine;
- a limited nuclear strike on Crimea;
- attack on the Russian Black Sea Fleet;
- the strengthening of sanctions, which would be a completely insufficient argument for further nuclear deterrence in the world.