International conventions have been established to promote counterterrorist cooperation to address which of the following perceived threats?

International conventions have been put in place to encourage cooperation among nations in combating various forms of terrorism, which include airline hijacking, attacks on embassies and diplomats, and transnational terrorist activity. Each of these threats represents significant challenges to global security and necessitates coordinated efforts among countries to effectively deter and respond to such acts.

Airline hijacking has historically posed a major threat to civilian aviation and international safety, prompting the need for international agreements to establish protocols and enhance security measures. Similarly, attacks on embassies and diplomats not only endanger lives but also threaten diplomatic relations, making it imperative for nations to collaborate on protective measures and legal standards to uphold the sanctity of diplomatic missions.

Transnational terrorist activity involves individuals or groups that operate across national borders, complicating law enforcement and counterterrorism efforts. This necessitates robust international cooperation, information sharing, and joint operations to effectively tackle the issue.

Given these compelling reasons, all of the mentioned threats are encompassed in international conventions designed to promote counterterrorist cooperation, making the comprehensive answer appropriate.