Why this matters: The case raises concerns about transparency, national security vetting, and ministerial accountability to Parliament. Date: 20 April 2026 Tags: UK Politics, Security, Government Summary: Keir Starmer defended appointing Peter Mandelson as US ambassador in Commons statement. Mandelson received security clearance in January 2025 despite officials recommending against it. He took the role in February 2025 and was dismissed seven months later. Dismissal followed