Chinese officials have privately taken credit for preventing nuclear warfare, claiming President Xi Jinping warned Russian president Vladimir Putin against using nuclear weapons earlier this year, according to a Financial Times report. Xi made the comments to Putin during the Chinese leader's visit to Moscow in March, Western and Chinese officials told the Financial Times. The Financial Times' sources claim China is boasting that it cooled Putin's threats of nuclear warfare. "The Chinese are taking credit for sending the message at every level," a senior U.S. official told the Financial Times. Western officials had already predicted the visit by Xi would reduce nuclear tensions.