"Joining an international organisation requires the consent of the government and ratification by the lower house of parliament," Tusk wrote on X.
'We will not let anyone play us'
"The government will be guided exclusively by the interests and security of the Polish state. We will not let anyone play us," Tusk added.
Earlier on Monday, Marcin Przydacz, the president’s foreign policy adviser, said Nawrocki had received an invitation from Trump, calling it recognition of Poland’s role on the international stage.
He said the presidential office had asked the foreign ministry for an opinion and that discussions with US officials would follow.
Karol Nawrocki and Donald Trump meet at the White House on Sept. 4, 2025. Photo: Radek Pietruszka
According to reports, the Board of Peace is intended to oversee the implementation of Trump’s peace plan for the Gaza Strip, though it could also address other international conflicts, including the war in Ukraine and the situation in Venezuela.
Trump would chair the board, and some media reports say permanent membership could require contributions of USD 1 billion.
Hungarian Prime Minister Viktor Orban published his invitation to the board on Sunday.
The AFP news agency reported that invitations have been sent to about 60 countries, including Egypt, Turkey and Canada.
The Kremlin said on Monday that Russian President Vladimir Putin has also received an invitation.
According to Poland's PAP news agency, proposed members include US Secretary of State Marco Rubio, Trump envoy Steve Witkoff, Trump's son-in-law Jared Kushner, former British Prime Minister Tony Blair, US billionaire investor Marc Rowan and World Bank chief Ajay Banga.
A source close to French President Emmanuel Macron said France was reviewing the proposed legal framework with its partners, while Germany said it would assess how it could contribute to efforts to find a lasting solution to the Gaza conflict, the AFP reported.
The preamble to the document establishing the board argues that existing international institutions have often failed to resolve global disputes, language widely seen as an implicit criticism of the United Nations.
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Source: TVP Info, IAR, PAP, Reuters