Poland has submitted a request to acquire Patriot integrated air defense systems from the US for $15 billion, the US Pentagon revealed on Wednesday.

The US Department of Defense agency responsible for foreign arms sales, the DSCA (Defense Security Cooperation Agency), explained that the sale will include up to 48 launch systems and up to 644 PAC-3 missiles, as well as the necessary radars and education.

According to the DSCA, the foreign ministry, on whose consent arms exports depend, approved the transaction.

“The proposed sale will improve Poland’s missile defense capabilities and contribute to Poland’s goals of modernizing its hardware and increasing interoperability with the US and other allies,” according to an agency press release.

Patriot systems are designed to intercept missiles and aircraft even if they are moving at very high speeds. The system’s arrays developed in Ukraine are praised by Kiev for proving very effective in protecting the capital from Russian airstrikes with regular ballistic missiles and even hypersonic missiles.