President Donald Trump on Sunday confirmed that the United States had intervened jointly with Japan to support the yen, calling the move a "signal of friendship" that would financially benefit the US and world economy. Asked aboard Air Force One why the US was moving to support Japan's currency, Trump said: "Because we have a good relationship with Japan." Analysts cited by FT estimated Japan's intervention may have totalled about 8.45 trillion yen ($52.8 billion). The Nikkei business daily put the amount at between 6 trillion and 7 trillion yen. According to FT, the move would be the first coordinated US-Japan effort to support the yen since 1998.des-kh/stu/msp