Yes, you objected the Russia installing military hardware on their bases in Cuba.
And Russia objected to NATo installing military hardware around the border of Russia.
No difference, except the players.
“Yes, you objected the Russia installing military hardware on their bases in Cuba.”
I think it’s clear you are not an American (besides the Canadian flag on your profile page), because you said “You” when referring to the US objecting to Soviet nuclear missiles being installed in Cuba (which is a bit more than just “military hardware”).
“And Russia objected to NATo installing military hardware around the border of Russia.”
What Russia objected to was NATO installing a DEFENSIVE missile system in Poland that would have been capable of intercepting Russian OFFENSIVE missiles aimed at the West.