Turkey's opposition parties have raised strong legal and political objections to the activation of the Mecca Defence Alliance, warning that the agreement could draw Turkish forces deeper into Saudi Arabia's security operations and potentially the conflict in Yemen. The pact between Pakistan, Saudi Arabia and Turkey was activated after an emergency meeting in Riyadh on October 5, but Turkey's opposition has questioned whether Ankara can undertake military commitments before the agreement is approved by Parliament.

The Mecca Joint Defence Agreement, signed into force on August 7, provides for a collective response to threats against its members and allows for rapid deployment of military capabilities. Its activation comes as Saudi Arabia faces growing security concerns linked to fighting involving the Houthis in Yemen. However, Turkey's entry into the arrangement has not yet been ratified by the Grand National Assembly, while the Turkish Constitution requires parliamentary authorisation for the deployment of troops abroad.

Opposition leader Ozgur Ozel criticised the government's handling of the agreement and warned that a defence pact with a country involved in an active conflict could make Turkey a party to that conflict. He also questioned reports of decisions being taken to deploy Turkish forces without the matter first being presented to Parliament. Other opposition figures have similarly cited constitutional provisions and demanded clarity over the agreement's legal status and the circumstances under which Turkish military personnel could be deployed.

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IYI Party lawmaker Turhan Comez accused the government of violating constitutional provisions governing international agreements and foreign military deployments. IYI Party international relations head Ahmet Erozan also questioned whether a formal text of the Mecca Pact was publicly available. New Party MP Namik Tan described any military deployment without parliamentary approval as unconstitutional and called for clarification over reports that Turkish forces or military capabilities could be sent to Yemen. New Party spokesperson Zeynel Emre likewise said the agreement would need parliamentary approval before it could take effect.

At the same time, Turkish personnel and military equipment are reportedly already present in Saudi Arabia. Reports cited by Middle East Eye said Ankara has maintained technical teams, air defence systems and electronic warfare equipment in the Kingdom since last year to protect critical infrastructure, including energy facilities. A Turkish official was quoted as saying additional equipment, technicians and emergency response teams could be sent under existing arrangements, while larger deployments would require parliamentary authorisation. Turkish officials have indicated that initial assistance is more likely to involve air defence, anti-drone systems and intelligence support than combat forces.

The Turkish government has not indicated that it plans a large-scale intervention in Yemen, with officials cited in the report saying Ankara continues to favour diplomatic efforts. Academic and presidential foreign policy advisory board member Murat Yesiltas said Turkey could seek parliamentary approval for the pact or a separate deployment authorisation within 30 days. For now, Ankara's reported approach is focused on strengthening Saudi Arabia's defensive capabilities while limiting direct involvement in Yemen, but any move towards a larger military deployment could intensify the domestic debate over the pact's constitutional and political implications.

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