The council was scheduled to convene at 1 p.m. following a decision by President Andrzej Duda, state news agency PAP reported.
The National Security Council advises the president and includes senior officials such as the Speakers of both houses of parliament, the prime minister, the defence, interior and foreign ministers, and prominent politicians from both the government and opposition.
The head of the president’s National Security Bureau (BBN) is also a member of the National Security Council (RBN).
At Monday’s meeting, which was expected to be held behind closed doors, the president was set to brief participants on the decisions of last week's NATO summit and the alliance's response to Russia's brutal war against Ukraine.
Duda told reporters last week that NATO leaders made a number of significant decisions at their summit in Madrid in response to Russia's invasion of Ukraine and to improve the security of the allies.
During the three-day summit in the Spanish capital from June 28 to 30, NATO leaders approved a new strategic concept of the alliance to describe Russia as “the most significant and direct threat to Allies’ security and to peace and stability in the Euro-Atlantic area.”
They also decided to strengthen the alliance’s eastern flank and invite Finland and Sweden to join NATO.
Meanwhile, President Joe Biden announced that Washington would create a permanent headquarters for the US Army's V Corps in Poland.
NATO Secretary-General Jens Stoltenberg said the alliance would increase the strength of its rapid reaction force from 40,000 to more than 300,000 troops.
Source: IAR, PAP