Before a refugee can come here they first have to be recognised as a refugee by the UN after which New Zealand Immigration do further screening before accepting them.
I believe we can trust the systems to minimise the risk. That same risk exists when granting asylum to refugees from other countries and issuing visas to migrants or visitors.
Are we to stop allowing any foreigners to come to New Zealand for fear they could be terrorists?
Furthermore, there's no guarantee a Kiwi will not decide to become a member of Islamic State or some other terrorist group.
It's happened elsewhere. As for concerns about refugees accustomed to war and violence struggling to adapt to life here, that is where settlement support services come in.
We cannot put refugees from any country on a plane, fly them to New Zealand and leave them to their own devices.
They need support to find housing, learn the language and the customs, find work, make friends and maybe even get some counselling.
It must be a huge adjustment for many of them but with the right support they can learn to fit in and make the most of life here.