By Graeme Dobell*
Submarines are so vital to Australia that two of our past prime ministers have publicly pointed to the nuclear-powered option.
Shifting from the conventional power of the existing Collins class and the planned Attack class to nuclear propulsion would take the subs saga to a whole new depth.
Before reading the nuclear-powered musings of Tony Abbott and Malcolm Turnbull (a rare meeting of minds), turn to the other part of the proposition: subs are vital.