The meeting, spearheaded by French President Emmanuel Macron, will see the attendance of around 20 global leaders, including heads of state or government from countries such as Germany, Spain, the Netherlands, Lithuania, Finland, and Romania.
Ukrainian President Volodymyr Zelensky is set to contribute via remote communication.
The conference will subtly addresses ongoing negotiations for a new NATO secretary-general, highlighted by the presence of Dutch Prime Minister Mark Rutte and Romanian President Klaus Iohannis, according to Polish state news agency PAP.
Recent reports suggest strong backing for Rutte by the United States, Britain, Germany and France, while Romania is believed to be promoting Iohannis for the NATO leadership role.
In the backdrop of the diplomatic assembly, the emphasis for Poland is squarely on national security, officials have told reporters.
"Security, security and more security," the Polish president's chief of staff, Marcin Mastalerek, said when asked about the central theme of Duda's participation.
On Saturday, the world marked the second anniversary of Russia's full-scale invasion of Ukraine.
The toll of the conflict has been heavy, with over 10,000 civilian casualties, numerous injuries and millions displaced, according to reports.
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Source: PAP, IAR