Officials from Kyrgyzstan, Kazakhstan, Tajikistan and Uzbekistan say they have agreed to work together in cleaning up millions of tons of radioactive waste left over from uranium mining during the Cold War.
Igor Chudinov, prime minister of the Kyrgyzstan, says the four countries signed a declaration to set up common programs to deal with the problem of radioactive and toxic waste in the region.
The U.N. says Central Asia, which was the biggest supplier of uranium to the former Soviet Union, still holds more than 800 million tons of radioactive and toxic waste. It says the waste is a threat to the environment and damages people's health.
Representatives of the four countries signed the declaration in a meeting with U.N. agencies in Geneva Monday.