The group, known as the “Vancouver Group” contains 16 countries that were part of the original UN-led military coalition that fought against North Korea’s invasion in the Korean War, as well as South Korea, Japan, India, Sweden and others – according to Tillerson.
Mr Tillerson said: “The pressure campaign is intended to lead to talks.
“We can’t talk unless North Korea is ready to talk, and I think, as we’ve indicated, we’re waiting for them to indicate a readiness to talk.”
Mr Tillerson added: “The pressure campaign will not abate, we will not be rolling any of it back, it will only be intensified as time goes by, and it will remain in place until they agree to give up their nuclear weapons and allow us to verify that that is in fact what they have done.”
Ms Freeland said it is a “demonstration of international solidarity against North Korea’s dangerous and illegal actions”.
The US Defence Secretary said the talks have Trump’s backing, despite the President ridiculing the idea of negotiations previously.
On October 7, he tweeted: “Presidents and their administrations have been talking to North Korea for 25 years, agreements made and massive amounts of money paid.
[It] hasn’t worked, agreements violated before the ink was dry, makings fools of U.S. negotiators. Sorry, but only one thing will work.”
He also tweeted that he told Tillerson that he was “wasting his time trying to negotiate with Little Rocket Man (a derogatory nickname he gave to Kim Jong-un).
But Mr Tillerson denied there was any confusion or mixed messages and said: “They have not rejected diplomatic talks. What the White House has merely observed is that North Korea has not exhibited a willingness to talk.”
He added the pressure campaign came from came from Trump’s National Security Council.
Canada and the United States plan to co-host an international meeting on North Korea in Vancouver in January.
Pyongyang has continued to test nuclear weapons and ballistic missiles in violation of UN Security Council resolutions.
The two ministers also are likely to discuss US President Donald Trump’s demand for revisions to the North American Free Trade Agreement between the United States, Canada and Mexico.
A senior State Department official, speaking on condition of anonymity, said Tillerson and Freeland conferred on North Korea, Ukraine and Venezuela among other issues.