President Joe Biden called an “emergency” meeting of G7 and NATO leaders in Indonesia Wednesday morning for consultations after NATO-ally Poland said a “Russian-made” missile killed two people in the eastern part of its country near the Ukraine border.

Biden, who was awakened overnight by staff with the news of the missile explosion, called Polish President Andrzej Duda early Wednesday to express his “deep condolences” for the loss of life. The U.S. president promised “full U.S support for and assistance with Poland’s investigation,” and “reaffirmed the United States’ ironclad commitment to NATO.”