Greece is expected to sign a deal with Israel on Monday to buy a multi-layer air defense system worth about €3 billion ($3.5 billion) as part of a broader military modernization program, two security sources told Reuters.

The country’s security council has given initial approval to the deal, which ⁠includes advanced short, ⁠medium and long-range missile systems.

“Greek officials later on Monday will sign four agreements with Israeli SIBAT and ​MAFAT directorates in Tel Aviv ⁠worth about €3 billion for three types of missiles and radar systems,” one of the officials ⁠told Reuters.

Greece plans ‌to ⁠spend about €28 billion by 2036 to build the “Achilles Shield” multi-layer anti-ballistic, anti-aircraft and anti-drone system, and to ​buy up to 40 F-35 fighter jets ‌from the US and frigates from France and Italy.

The source added that a separate agreement for an anti-drone system would also be ​signed.