Around 10,000 US service members are currently stationed in Poland on a rotational basis, making it one of Washington's largest military deployments in Europe.
Kosiniak-Kamysz also urged NATO allies to step up defence spending, saying the target of allocating 5 percent of GDP to defence should be reached by 2030 rather than 2035.
"It must be achieved by 2030 because later it may be too late," he said.
He told the conference that "there is no alternative to NATO or the European Union," adding that the EU should focus on funding, capabilities and boosting production capacity, while NATO’s strength lies in the national armies of its members.
Kosiniak-Kamysz said Poland aims to strengthen its role as a leading contributor to NATO’s European pillar in the coming years.
He also outlined plans to build what he described as the strongest and largest army in Europe by 2030, with a force of 500,000 troops, including 300,000 professional soldiers and 200,000 high-readiness reservists.
"Our strategic goal is a well-organised and well-equipped army, and we are directing all possible efforts toward that," he said.
Kosiniak-Kamysz emphasised the importance of public involvement in national defence, saying security depends not only on the military but also on civil preparedness, training and resilient institutions, state news agency PAP reported.
He called on the defence industry to step up production, urging companies to operate around the clock to meet military needs by the end of the decade.
The appeal followed the European Commission's approval of a Polish loan agreement under the EU's SAFE defence funding programme, with EUR 43.7 billion in low-interest loans intended to support Poland's armed forces and defence sector.
"We are living in times of threat, in a prewar era, building a new security architecture," Kosiniak-Kamysz said. "Higher defence spending must be matched by even greater engagement from the defence industry.”
He added that Europe must act quickly to strengthen its security and defence capabilities.
"Europe can once again be a beacon for other continents, but it must wake up, understand the threat and respond swiftly—a day before, not a day after," he said.
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