New Zealand is weighing the purchase of advanced warships from Japan or the UK to modernise its ageing fleet and bolster its defence capability.The South Pacific nation, member of the Five Eyes intelligence-sharing network alongside Australia, the US, the UK and Canada, is focused on Japanese Mogami-class or the UK’s Type 31 frigates.Discussions are under way with the Royal Australian Navy and the UK’s Royal Navy about the frigate replacement and ongoing service arrangements, Defence Minister...