The defence and military cooperation agreement between Greece and the United States includes procurement worth USD 4 billion.

Omissions

• Reuters characterises the deal as 'up to $4 billion', i.e. a ceiling rather than a finalised fixed amount, whereas the official U.S. State Department Joint Statement states flatly '$4 billion in Foreign Military Sales'.
• The procurement consists of specific programmes (further F-16 fighter jet upgrades and advanced missiles), not a single lump-sum contract.

Sources

• PrimaryU.S. Department of State — Joint Statement on the U.S.-Greece Strategic DialogueThe United States and Greece announced $4 billion in Foreign Military Sales in support of Greece's long-term defense plan to deepen our [defense cooperation].
• SecondaryReuters — Greece agrees up to $4 billion US arms deal, sources sayGreece has agreed to spend up to $4 billion upgrading more of its F-16 fighter jets and buying advanced missiles from the US.
• SecondaryAnadolu Agency — US announces $4B in military sales to Greece as countries deepen defense tiesThe US and Greece announced $4 billion in Foreign Military Sales to support Athens' long-term defense plans as the two countries pledged to deepen defense ties.