When you state you are a "millennial on the left", In the context of US / Americans, does left here means Democrats, or does left here means left on the political spectrum. Or at least left in the US political spectrum. ( Since left in US and left in UK are largely if not completely different )
Because I have seen a lot of "NATO skepticism on the American left". I dont even think the word skepticism is correct. They literally wanted to cancel NATO.
Wouldn't your view, in this case be more aligned as what is called centre-left? Especially in the context of US. Because if an outsider were to judge the US Left purely from Internet / Social Media / TV / Mass Media, than being pro-NATO ( so to speak ) is very much a right wing or non left wing view.