Lots of people get confused by labels. When evaluating NFL players, people will say, but so and so was a first-round pick when he was taken 28th, and so-and-so is a second-round pick when he was drafted 35th. There's a much bigger difference between pick 6 and pick 28 than pick 28 and pick 35. The "rounds" are just arbitrary cut-off points. 

Similarly people will say "Trump promised no wars" and now he's attacked Iran. "War" is like first-round pick. You can define what's happening in Iran as a "war" and sick burn all the peace promises if you like, but the difference between this "war" and a war where we spend trillions, kill millions and destabilize an entire region is a lot different than kidnapping Maduro or taking out Khameni. 

If this does devolve into Iraq 2.0 or worse, that'a another matter, but if it's more like Venezuela, then it's not really contradicting the platform on which he was elected. Think a lot of people are conflating the two for clicks and outrage, but it's pretty obviously stretching one label to cover two very different scenarios.

This is not an opinion on whether taking out Khameni (or kidnapping Maduro) was "good," legal or desirable -- we will only know that over the medium and long haul. Only that this conflation of two very different things is lowest-common-denominator posting.