What exact "security threats" to Russia? Countries bordering it, like Finland joining NATO is a "threat" to Russia? Seriously?
Only crazy people, or russians, believe NATO will ever attack a nuclear armed Russia first.
Sure, voluntary defensive pacts against an imperialistic Putin that invades his neighbors and seizes their land(Ukraine and Georgia), makes us the "security threat" to Russia. Okay
“Only crazy people, or russians, believe NATO will ever attack a nuclear armed Russia first.”
On the other hand, consider what thoughts ran through the mind of JFK, probably the soundest Democratic President in my lifetime:
“In May 1962, Khrushchev began to ship ballistic missiles to Cuba and technicians to operate them. He believed that President Kennedy was weak and would not react to the Soviet move.”
https://history.state.gov/departmenthistory/short-history/cubanmissile