The US and Cambodia signed an agreement on Monday that launched a cooperative effort to detect and intercept the smuggling of nuclear and other radioactive material. Signed at the Secretariat of National Counterterrorism Committee in Phnom Penh and known as the Megaports initiative, it paves the way for the Kingdom to install radiation-detection equipment at the Autonomous Port of Sihanoukville. The initiative is now in effect at 28 ports around the world, the US embassy said. The equipment is designed to improve Cambodia’s ability to monitor cargo entering the region.