All families need to be treated equally, for the sake of the children.

THE Convention on the Rights of the Child is a treaty that enjoys almost universal support, having been ratified by 193 countries, including Australia. It provides that in all actions concerning children, the best interests of the child must be a primary consideration.

Contrary to Nicholas Tonti-Filippini’s assertion on this page yesterday, a proper application of the principle of the best interests of the child leads to the incontrovertible conclusion that Australia should legalise same-sex marriage.