Dateline Pacific evening edition for 16 October 2017

New Zealand is silent about a threat by Fiji to expel Wellington's top diplomat in Suva; UNICEF says there will be serious logistical challenges in returning thousands of evacuees to the Vanuatu island of Ambae; There's been criticism of the data used to determine Cook Islands developed nation status; A growing mental health problem in Tonga; Projections show there will be more plastic than fish in the ocean by 2050; Niueans urged to do more to ensure their language and culture survives.