Washington (CNN) The Trump administration has approved the potential sale of 32 F-35 Joint Strike Fighter jets to Poland, a sale valued at $6.5 billion.

The administration formally notified Congress of the sale on Tuesday.

The advanced stealth fighter "will enhance the Polish Air Force's contributions to NATO and/or other coalition operations, improve Poland's self-defense capabilities, and contribute to Poland's goal of modernizing its military capabilities while further enhancing interoperability with the United States, NATO members, and other allies," the Defense Department said in a statement.

In June, a US Marine Corps F-35 fighter jet conducted a flyover during Polish President Andrzej Duda's White House visit with President Donald Trump.

Poland has been steadily increasing its defense spending, in part due to Warsaw's concerns about Russia following Moscow's military incursion into Ukraine.

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