There's a difference between "major threat" and "unacceptable risk." There are no major threats in the Western hemisphere, just a lot of unacceptable risks from a bunch of brownoid retard commies that ought not to be entertained. The Cuban Missile Crisis shows how fragile the Monroe Doctrine is if you let a single fuckup persist, and why every country that is not on our side unambiguously should be surrounded by missiles with us watching their every move. The Cuban Missile Crisis was more than 6 decades ago, but the situation with Venezuela is not really any different structurally. Russians and Chinese were placing military and espionage assets to corner critical resources, infiltrate our country, and point missiles at us. Cuba might not be anything on its own, but what it is is a place adversaries can build up a little knife right against America's dick, Florida.
There should be a total of 0 forward operating bases for Chinese or Russian arms, 'advisers' (read: spooks and mercs), or their hostile, stagnating, ugly ideologies in the Western hemisphere. If there's an S300 in our half of the world, it better be exploding. If there's a Chink or a Slavoid with a gun, he better be in our army and pointing at a Muslim or a communist, with his phones tapped and his family watched. The number of countries our adversaries can expect a warm welcome in should be 0, and it should be impossible to raise above zero. It should terrify a brownoid 'statesman' in their rinky dink palace to think that the Russians or the Chinese might decide they have interests in the Western Hemisphere. The liberty of our neighbors to pursue strategic relations with hostile powers is our unacceptable risk.