Once he threatened the world with nuclear annihilation but now Cuban commie ex-kingpin FIDEL CASTRO is just another enfeebled old man.

Castro who once teamed with Russia's Nikita Khrushchev and Red China’s Mao Tse-Tung to create an unholy empire of Red menace made a rare public appearance at age 87.

JFK tried to take down Castro in the failed CIA “Bay of Pigs” secret invasion and then put the world on red alert when facing Russia over “the Cuban Missle Crisis” in 1962. The Reds relented after we cut a deal to take our nukes out of NATO pal Turkey.

Yesterday, Castro, Cuba's former President and revolutionary leader, hobbled out in public to attend the inauguration of an art gallery on January 8, 2014 in Havana, Cuba.

Castro, who ceded power to his brother Raul Castro in 2008 after falling ill in 2006, had last been seen in public in February 2013 at a National Assembly meeting.

The gallery Castro visited is run by artist Alexis Leyva, aka Kcho — who is not their version of Banksy.

The ailing ex-dictator is said to visiting his chums Lenin & Marx soon in that great big Red Politburo in the sky.