Labor's foreign affairs spokeswoman Penny Wong is unmoved by an historic handshake between Donald Trump and Kim Jong-Un at the Korean Demilitarised Zone.
Donald Trump's historic steps at the North Korean border won't mean much unless it leads to the denuclearisation of the rogue state, Labor says.
Mr Trump on Sunday became the first sitting US president to set foot in North Korea when he met Kim Jong-un in the demilitarised zone.
Opposition foreign affairs spokeswoman Penny Wong acknowledged it was a historic moment.
But the meeting - along with previous encounters between the leaders in Singapore and Vietnam - should be judged on whether or not it led to North Korea's denuclearisation.
"Let's remember the reason there have been sanctions across the board, multilateral sanctions against North Korea, has been because they are a risk to global security and a risk to peace and security in the region," Senator Wong told ABC radio on Monday.
"What we need is North Korea to follow through - which they have not yet done - on the commitments they made in Singapore with steps to complete denuclearisation."