I sometimes wonder if he says "new-cue-lar" just to sound a bit uneducated.
Of course, it could just be the regional accent. My dad grew up in Texas and not only did he pronounce nuclear in that manner, he also said "DEE-troit," "MON-roe" and "Ha- WYE-ya." Drove my mom crazy, because she was an English teacher. LOL!
That drives me nuts.
I cringe too, mostly because the mispronunciation of the word "nu-CLE-AR" has always got on my nerves, and also because I know the petty will jump on it as a chance to discredit and ignore him. Maybe he should go on mispronouncing it: I know he know, at least basically, how nukes work, and also the mispronounciation will bring out all the vile pettiness into the open for the reading and listening plesure of mainstream America.
Know thine enemy. LOL...the more the so-called "progressives" show just how small minded and unimaginative they are, the better mainstream America gets to KNOW them.