Pakistan, Saudi Arabia and Turkey on Friday signed the "Mecca Joint Defence Agreement", a trilateral pact aimed at strengthening defence cooperation among the three countries.
According to Pakistan's Foreign Ministry, the agreement provides that an armed attack against any one of the three countries will be regarded as an attack against all of them.
"The Agreement is intended to strengthen collective deterrence against any act of aggression, and stipulates that any armed attack against any one of the three States shall be regarded as an attack against them all. It further provides for the enhancement of all aspects of defence cooperation among the three States," the ministry said in a statement.
The agreement was signed during a meeting in Saudi Arabia attended by Saudi Crown Prince Mohammed bin Salman, Turkish President Recep Tayyip Erdogan and Pakistan Prime Minister Shehbaz Sharif.
Sharif arrived in Saudi Arabia on Thursday for a three-day visit accompanied by a high-level delegation that included Army Chief Field Marshal Asim Munir.
According to reports, the agreement is expected to facilitate joint military exercises and training, technology transfers and intelligence sharing among the three countries.
The pact comes as Saudi Arabia seeks to diversify its defence partnerships following attacks on its oil facilities and critical infrastructure during regional conflicts involving Iran and its allies.
The agreement also comes against the backdrop of heightened regional tensions, including the conflicts involving Iran, Gaza and Lebanon.
Pakistan and Saudi Arabia had signed a separate strategic defence pact in September, under which an attack on one country would be treated as aggression against both.
Turkey's participation adds strategic significance to the agreement as it is a member of NATO and has the alliance's second-largest military after the United States.