Go Around Initiation
First, I'm not a pilot, but someone who has undertaken research of aviation CRM in order to compare it with another system (law, as it happens).
It struck me that the safest course of action would be for either PF or PNF to be able independently to initiate a go around. Is that the case - could the FO have declared go around instead of asking, or is it still the PF's discretion?
I presume the only situation where a go around would be inhibited by the circumstances would be critical low fuel (which, I'm guessing would be briefed and obvious). In any other situation, I'd have expected any doubts about continuing the approach to mean an executed go around, with a discussion as to those doubts afterwards - is that generally SOP?