What If: Collozo and Torresola succeed in 1950?

So you have liberal Democrat Alben Barkley to take his place. He would've taken a more diplomatic approach to the Korean War, yet he wouldn't have backed down from a conflict. He would've been a better president than Truman, no question there, yet perhaps his approach to Communism wouldn't be as though, putting the following of the Truman Doctrine into question, letting many Marxist regimes to flourish unopposed.