There's a four digit binary code. We know the first three digits are 0 0 0. We only get two chances to enter the correct code before being locked out. We're fucked.
1939 neutral Norway asked if you could do a bit of Google and revise your opinion in 1940. Sweden are pleading the fifth on their 1939 neutrality announcement.
Why can't we use nukes without asking the US? We are dependent on them for maintenance but you think we press a button then they get a pop up saying "UK wants to launch nuke, allow, yes / no" ?