An international geopolitical analyst says New Zealand's review of funding to the UN's aid agency in Gaza is appropriate - but should be done quickly.

Several western countries have suspended funding to the UN Relief and Works Agency - following allegations its staff were involved in the October 7 Hamas attacks on Israel.

Australia, the US, the UK and Canada are among them.

Analyst Geoffrey Miller told Tim Dower the allegations warrant scrutiny.

He says it means western donor countries indirectly funded Hamas attacks on Israel -- which are why the allegations are so serious.

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