WARSAW, Poland (AP) — Poland’s president is calling on other members of the NATO alliance to raise their spending on defense to 3% of their gross domestic product.

The plea on Monday comes as Russia puts its economy on a war footing and pushes forward with its invasion of Ukraine.

Polish President Andrzej Duda made his appeal both in remarks in Warsaw and in an op-ed published by The Washington Post.

It came on the eve of a visit to the White House where U.S. President Joe Biden will receive both him and Polish Prime Minister Donald Tusk on Tuesday.