美联储穆萨莱姆：前瞻指引意味着承诺，而传达政策框架则有所不同。

U.S. equities extended losses; Dow Jones Industrial Average fell more than 1%, S&P 500 down 0.58%, Nasdaq Composite down 0.95%.

U.S. President Trump announced the toughest-ever economic sanctions on Iran and urged allies to join in isolating the country. He warned any state that allows its banks, companies, airports or government entities to provide any form of assistance to Iran will face severe economic consequences. He specifically said oil smuggling, swap lines, cash transfers, currency-exchange firms, vessel registration and shell companies must stop. Trump reiterated that Iran will not be allowed to develop nuclear weapons.