Seriously, are Americans really incapable of understanding why Russia feels threatened?

NATO: *ships ICBMs to Ukrainian border* Why are you feeling threatened?!

Russia: *points to ICBMs at Ukrainian border* We need a guarantee Ukraine won't join NATO.

NATO: No. Why are you so scared of Ukraine?!

Russia: *points at ICBMs* We're scared of the U.S. you mfs!

Seriously, if Russia puts ICBMs on Cuba, do you react like Russia's just "watching out for their ally's interests against U.S. invasion"? No? Then why the fuck should Russia treat U.S. military equipment armed at the Ukrainian border like it doesn't threaten them? Are you fucking stupid?