He's on cloud cuckoo land. What worries me is that he's deranged enough to think that if he disbands the British Armed Forces first then everyone else, including the Islamic State, might want to get round a negotiating table with us and work out a solution for them disarming.
"It would be great if nobody needed a military" is not the same thing as "we will disband the British Armed Forces and then try and talk to everybody who comes to attack us". I'm sure you know that.