"Poland’s participation is important and needed, but this type of international agreement must go through the entire constitutional procedure,” Nawrocki said in an interview with private broadcaster TV Republika.
Nawrocki said Trump confirmed during the meeting that the United States has no plans to withdraw American troops from Poland, describing security as the central topic of their talks.
“The meeting primarily concerned security issues—the confirmation of security guarantees for Poland and the presence of US troops in our country,” Nawrocki said, adding that G20-related issues were also discussed.
The Polish president said the proposed Board of Peace was one of the most widely debated topics at Davos, alongside discussions about Greenland, during multiple bilateral meetings and panel discussions.
Asked whether Poland intended to join the body, Nawrocki said decisions are simpler in countries where power is concentrated in one leader, while in Poland international agreements require constitutional approval involving state institutions.
He said he made clear to Trump that while political support for the initiative exists, formal participation would require ratification.
“My support for President Trump is unwavering, as is President Trump’s support for Poland,” Nawrocki said. “But to sign a binding international agreement on behalf of the Polish nation, the full constitutional process must be followed.”
Nawrocki was also asked about Trump’s interest in Greenland and what it could mean for Poland. He dismissed speculation about any Polish military role.
“It was obvious that Poland would not send its soldiers to Greenland,” he said, calling suggestions of a confrontation between NATO, the European Union and the United States over the Arctic island unnecessary and irresponsible.
He said the issue of Greenland should be "resolved through dialogue between the United States and Denmark, with respect for Greenland itself."
Nawrocki described Greenland as strategically important and warned that any conflict there would threaten Europe and the broader international order.
“Regardless of who leads it, the United States remains one of the guarantors of transatlantic security for countries such as Poland,” he said, adding that dialogue—not escalation—was essential.
Trump’s initiative to create a Board of Peace has sparked controversy among diplomats. Several European countries, including France, have questioned whether it is compatible with the United Nations system and the UN Charter.
A White House official said on Wednesday that about 30 countries have so far accepted the invitation to join the initiative, which according to draft documents would be chaired for life by Trump with sweeping powers.
The organisation’s founding charter is expected to be signed on Thursday in Davos.
Under the proposal, member states would be appointed by Trump for three-year terms unless they pay USD 1 billion for permanent membership.
Invitations to join the body have been confirmed by leaders including Hungarian Prime Minister Viktor Orban, Turkish President Recep Tayyip Erdogan, Russian President Vladimir Putin and Belarusian leader Alexander Lukashenko.
France, Britain, Canada and China have also acknowledged receiving invitations.
The AFP news agency reported that around 60 countries were invited, and Trump said on Wednesday evening that Putin had accepted the invitation.