If putin throws a dud nuclear weapon out, would that stop us from nuking them?

No. Because retaliatory missiles would be fired long before the “dud” landed. I can guarantee that any missile leaving any known nuclear site would illicit a response. The only hesitation would be “where is it heading?”. After that though… it’s fair game.

now find out why America doesn’t have universal health care?”

Fucking wish America would stop being the worlds police.