Today, the Russian government has neither the intention nor the capability to launch the sort of premeditated conventional attack on NATO that the new missiles are supposed to counter. Russian nuclear "saber-rattling" is intended to deter NATO from intervening directly in Ukraine, and thereby starting a NATO-Russia war. There remains however an acute risk that an unplanned mutual escalation could lead to war. In this case, U.S. missiles firing into Russia from Germany could easily be the tripwire for nuclear catastrophe.