PANews reported on May 17 that, according to Iranian media Fars News, the United States has made the unfreezing of up to 25% of Iran's frozen assets a condition, and has also demanded that Iran hand over 400 kilograms of enriched uranium. Sources said that the US, in its response to Iran, stipulated that Iran must retain only one operational nuclear facility, and that the US has made it clear that it will not pay any compensation to Iran.