Former Defence Minister Ron Mark says its not clear how New Zealand could meaningfully support reopening the Strait of Hormuz. 

The US has formally provided an initial plan to New Zealand for the Government to consider - but Foreign Minister Winston Peters says more detail's needed. 

Mark told Heather du Plessis Allan that our defence forces have reduced capability - and he could only see us helping with aerial surveying. 

He says we are strategically irrelevant right now - and there's no way he could see us deploying a frigate. 

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