India, Aug. 7 -- Saudi Arabia, Turkey and Pakistan on Friday signed a trilateral defence agreement aimed at strengthening military cooperation and collective security among the three countries.

Signed in the Saudi holy city of Mecca by Saudi Crown Prince Mohammed bin Salman, Turkish President Recep Tayyip Erdogan and Pakistan Prime Minister Shehbaz Sharif, the pact says that an armed attack on any one of the three countries will be treated as an attack on all.

According to Pakistan's foreign ministry, the agreement is designed to strengthen "collective deterrence" against any act of aggression. It says that if one of the three countries is attacked, the other two will regard it as an attack against themselves.

The pact also commits the...