About 90 Patriot missiles from Israel are being sent to Ukraine in a transfer facilitated by the United States, according to a US defense official.

The United States transferred some 90 Patriot air defense interceptors from Israel to Poland this week to then deliver them to Ukraine, Axios reported on Tuesday, citing three sources with knowledge of the operation.

The United States has transferred around 90 Patriot air defense interceptors from storage in Israel to Poland for delivery to Ukraine, sources familiar with the operation told Axios. The transfer comes as part of efforts by the Pentagon to bolster Ukraine’s air defense capabilities against Russian attacks on critical infrastructure.