He’s nobody

For the benefit of anyone worried about J. Corbyn’s announcement that he will never push the nuclear button: don't panic, he’s just a political book mark and he’ll never get within sniffing distance of said button. Which is the reason why his failure to do the decent thing and bow at the Cenotaph at the Remembrance service doesn’t matter; he knows he’s just a bookmark and he’ll soon be forgotten, so he can be as curmudgeonly as he likes.