Five stars. Really more like four, but I'll give him five because I imagine he's not going to rank nearly as high here as I think he ought to. Vietnam was, of course, horrific, but there's an argument to be made that it was necessary in order to win support for his domestic programs at home - and the significance of those really cannot be understated. Civil Rights, Medicare, Medicaid, environmental protection, urban housing, removal of all immigration quotas, Social Security expansion, public broadcasting, education funding; I could go on, but the Great Society is a virtual laundry list of progressive achievements that fundamentally reshaped the United States in ways that are so ingrained into society that they're taken for granted.
More bombs were dropped during Operation Rolling Thunder on a tiny half of a nation than against the Japan during WW2. But that's okay because 'muh healthcare'. This argument sounds awfully close to making sure the trains ran on time.
2 Stars (not an apologist for war criminals).