Moffett is a member of the New Conservative Party and was responding to a news story headlined, “Peters blames ‘alt-right’ for UN migration pact criticism”.
“Yes we’ll see whether you 2 traitors are still smiling when we are done with you next year,” he wrote on Twitter.
“Have a good break coz you’re going to need it. Next year will likely be your Annus Horibilis because we are coming to get you.”
According to the United Nations, the migration pact allows non-legally binding agreements for countries to “enable all migrants to enrich our societies through their human, economic and social capacities.”
Earlier this week, Peters announced New Zealand would support the pact.
Australian Moffett quit as New Zealand Rugby CEO in 2000. He is prolific on Twitter – and once referred to Peters as “ARCH HYPOCRITE”.