I generally take the word "conquest" to mean some outside force coming in and taking over. That didn't happen in either Vietnam or Korea. You could argue that the USSR used conquest to take over territories for the soviet union. However, that's not something really arguable about Vietnam or Korea. Vietnam, in particular, was the native population overthrowing their conquerors, the french, and then deciding they wanted to be communists. They got support from both the USSR and China, but they weren't ultimately under the umbrella of either regime.
Now, I'd agree that Vietnam and Korea both had civil wars supercharged by the US, China, and Russia. But I disagree that these were wars where the US was stopping conquest. We see that in the modern state of Vietnam and North Korea. Vietnam, funnily, became a closer ally to the US than China after the war.
Cuba is very much the same way. It wasn't conquered by an outside force. Yet they did ally with the USSR once the dust settled. They were still an independent nation from the USSR.
The Communists. Would you rather live in North or South Korea?
Vietnam is interesting in that they're still politically authoritarian but willing to be more economically open; see also China. (Just don't say the wrong thing about the wrong people.)
Today obviously the South. In 1950, probably the North. Throughout the Korean war, it's a wash. The US obliterated the north, but the south was completely insane towards their own civilian population. The ROK was not a "nice" government to live under during the korean war.
If you lived in the north there was a good possibility that you were getting bombed. It was best to live near china.
If you live in the south, there was a good chance you would be conscripted and sent to the meat grinder as a man.
The subsequent cease fire, the south has rebuilt and become the better place to live. The north has mostly struggled due to international sanctions. They have never fully recovered.
"The Communist" were a faction in a civil war, that's not an invasion. And the split in both cases (Vietnam and Korea) was recent and artificial, in the sense of no tradition of there being two countries. It wasn't one country invading another country, but two halves engaged in a civil war.
Where one wants to live is irrelevant. It wasn't about stopping an invasion, which was the initial claim. The US was meddling.
> Vietnam and Korea were technically wars to stop conquest, no?
No.
For example, the US got involved in Vietnam to help the colonizer (France) stop an independence movement. Yes, because they feared the resulting Vietnam may become communist and USSR aligned (something they helped happen, since Ho Chi Minh quite admired the US and expected them to help him at first), but even if this was the case, it's still not about stopping an invasion, because commie Vietnamese are still Vietnamese.
I generally take the word "conquest" to mean some outside force coming in and taking over. That didn't happen in either Vietnam or Korea. You could argue that the USSR used conquest to take over territories for the soviet union. However, that's not something really arguable about Vietnam or Korea. Vietnam, in particular, was the native population overthrowing their conquerors, the french, and then deciding they wanted to be communists. They got support from both the USSR and China, but they weren't ultimately under the umbrella of either regime.
Now, I'd agree that Vietnam and Korea both had civil wars supercharged by the US, China, and Russia. But I disagree that these were wars where the US was stopping conquest. We see that in the modern state of Vietnam and North Korea. Vietnam, funnily, became a closer ally to the US than China after the war.
Cuba is very much the same way. It wasn't conquered by an outside force. Yet they did ally with the USSR once the dust settled. They were still an independent nation from the USSR.