Polish President Andrzej Duda said he had proposed increasing NATO’s military presence in eastern Europe during a meeting with NATO Secretary-General Jens Stoltenberg in Brussels on Thursday.

“In connection with Russia’s activities near Ukraine, I made a proposal to increase the readiness of NATO forces in this part of Europe and consider strengthening their presence, for example as part of the Air Policing mission,” Duda told a press conference after the talks.

“[W]e are not only ready to defend NATO countries but also pay attention to the security of our allies outside the alliance, with whom we cooperate, such as Ukraine.”

NATO’s enhanced Forward Presence Battlegroup Poland, established in 2017, is a multinational battlegroup comprised of units from four nations: Croatia, Romania, Britain and the United States. It consists of about 1,000 soldiers and is led by the United States.