"Poland will fulfil all obligations arising from the North Atlantic Treaty, in particular Article 5," Kosiniak-Kamysz said.
The two countries are expected to sign a new bilateral security cooperation agreement in Tallinn on May 21, replacing one from over a decade ago, he added.
During the meeting, Poland's state arms group PGZ signed a long-term cooperation agreement with Estonian firm Frankenburg Technologies covering joint development and production of defence technologies.
The deal focuses on short-range air defence systems, including MARK I designed to counter drones, with plans to establish a production facility in Poland capable of producing up to 10,000 missiles a year.
A future MARK II system is also envisaged, with a planned strike range of five to eight kilometres.
Pevkur called on NATO allies to stay united, warning that divisions served Moscow's interests.
"If we do not act in unity, we will unfortunately lose a great deal," he said.
He referenced recent Russian drone attacks on Baltic states, including a strike on a power plant chimney in Auvere, northeastern Estonia, saying they were a consequence of Russia's invasion of Ukraine.
(ał)
Source: PAP