[margalabargala]

The parent was asking about political parties. In Vietnam, the leftist party runs the country. If "in charge of a politically stable, economically growing country for decades" doesn't meet the definitions of "successful or meaningful" in the context of a political party you're going to have to be more specific.

[lupusreal]

More successful than meaningful, like the way China is nominally communist but arguably not meaningfully so, as he mentioned.