The threat in the cold war was the Soviet bloc.
The threat must be re-defined. An infiltrating invasion force that multiplies many times faster than the usual population. The infiltrator is intent on taking over and instituting a new law. All people must either submit to it, convert to it or get their necks cut.
Weapons and tactics do not involve naval fleets or armored divisions, but street to street, door to door, with many IED’s.
Merkel is a bigger enemy than Russia