Unchecked Censorship Authority

This provision grants the Commission unlimited power to issue binding directions to postal and courier operators based on undefined "national security" and "international relations" concerns, with no procedural safeguards. Directions could require operators to screen mail contents, block publications, delay political materials, or disclose sender/recipient information—all without prior notice, hearing rights, or independent review. Section 59(2) mandates compliance "despite any other duty," overriding confidentiality and service obligations. This creates a legal framework for arbitrary censorship of communication channels, with no requirement to demonstrate actual security threats or provide affected parties opportunity to challenge restrictions before enforcement.