If the Russians are whining about it, it’s a good thing for us.
The US has an ABM system in the US and Alaska - it is and was installed to protect the missile fields in the Dakota’s etc.
The Russian ABM system is set around Moscow. Meaning that Russia is planning on “first strike” with their ICBMs and need to protect themselves (or at least the rotten pols) from retaliation....
I suspect the United States is replacing it’s 30 year old Pershing missiles deployed during Reagan’s day.
This is not an act of war, and Russia just having invaded two portions of the Ukraine should be able to figure out why we are replacing our old weapons.
It’s called deterrence.
By arguing the way you are, you are playing the role of the Democrats in the 1980s, who were then siding with Russia to claim Reagan was a warmonger.
Obama is an idiot, but replacing those dated weapons makes sense. Our nuclear weapons need to be replaced with more reliable equipment.