Twenty-one countries have now joined the Priority Ukraine Requirements List (PURL) program to help Kyiv purchase US weaponry, Ukrainian Foreign Minister Andriy Sybiha said on Thursday. Sybiha added that total commitments under the program have surpassed $4 billion. JOIN US ON TELEGRAM Follow our coverage of the war on the @Kyivpost_official . The PURL program, coordinated by NATO, lets countries combine their money to buy US-made weapons and equipment for Ukraine. The funds go to the systems