How is that massively more powerful than outright nuking someone? Counters to ballistic missiles aren't much more common than anti-teleport stuff.
Depends.
Anti-ICBM defense wouldn't be too hard in this setting and unless somebody develops special submarine mode for ballistic missiles your underwater nation for example is far less threatened by nukes dropping on you.
A typical ICBM requires at least hours to reach its target and anyone familiar with them can spot it early on and then intercept it. Sure in the modern world we have problems with the latter part but that's what's far different in a fictional setting.
Now if you add technobabble and especially if you add teleportation to shorten the distance then the only difference will be that your IDBM (Inter-Dimensional Ballistic Missile) would drop out of a portal or rematerialize above the target and crash down to damage from the outside while teleporting nukes oviously would detonate from within.
Still, that's a meaningful difference again, depending on who you are up against. Shields or "anti-nuke forcefields" could be a thing and teleportation can potentially bypass these again.
So yeah, almost in every occasion teleporting nukes straight to the target is more broken because it's essentially an auto hit which is bound to do massive damage.
WMDs cost as much as Great War Engines. But yes, it is a risk.
I always had problem with that.
We have starships with city-wrecking firepower as "airships" or even navy as well as heroes with citybusting spells and futuristic GWEs whose regular firepower may be close to a nuke already.
Maybe if the WMDs can be restocked for free after each strategic turn.
I'd thought you were Russian for some reason. Huh. On another side note, what's your relation to the Red Alert Mental Omega mod?
And I thought he was British since timezones seemed to that.
Well, Germany is even closer so I suppose that idea just slipped my mind.