ANKARA, Turkey (AP) — Saudi Arabia, Turkey and Pakistan signed a defense agreement on Friday that would treat an attack on one as an attack on all three, officials said, solidifying cooperation between the three regional powers at a time of growing security concerns. The so-called “Mecca Joint Defense Agreement” between the three Sunni Muslim-majority states brings together oil-rich Saudi Arabia and nuclear power Pakistan as well as Turkey, which has NATO’s second-largest army and a rapidly growing defense industry. In September, Pakistan and Saudi Arabia signed a mutual defense pact that also defines any attack on either nation as an attack on both. A statement from Saudi Arabia insisted that the agreement does not amount to a military pact and would not affect the kingdom’s existing partnerships. Pakistan, which already held a bilateral collective defense pact with Saudi Arabia, has not been a significant partner in anti-Houthi operations so far,” Kinnear said in an emailed note.