US Acting Secretary of Defense Patrick Shanahan’s letter to his Turkish counterpart Hulusi Akar sent shock waves into Turkey’s foreign policy and security establishment and Turkey doesn’t yet know “how to reply,” a senior security source told Al-Monitor.
The official also said the letter is even “more menacing” than a letter sent from Washington to Ankara in 1964, the year that was marked by the greatest tensions between Turkey and the United States since the foundation of the modern Turkish republic.