Regardless / regardless of

When "regardless of" is used as a preposition, the identity of the thing that is being disregarded in respect of the main action of the sentence is made immediately clear. (e.g. "He went ahead and did it, regardless of the consequences" - he disregarded "the consequences" and "went ahead and did it.")

What about when using "regardless" as an adverb? Can "regardless" be left hanging at the end of a sentence without further explanation? Example:

"I am not arguing that Stalin would have held back from introducing his drastic land reform policy had Germany not invaded the Soviet Union. Stalin was such a radical follower of Marxism-Leninism that he would have enacted a similar policy regardless."

Is it automatically clear that what I am trying to say is that regardless of whether Germany invaded the Soviet Union, Stalin would have introduced his land reform policy? Or is my meaning not obvious or clear enough such that further explanations are warranted? Thanks.