So supposing the ICBM's he will launch are minus nuclear warheads, surely the Russians will not in the minutes before impact be able to differentiate between none nuclear and nuclear ICBM's so would react accordingly and respond... Unless Corbyn has some devious plan to install a radio transmitter in the missile transmitting a strong "we are not amused, but are firing blanks message"..
Carriers without aircraft and subs without missiles.. What next