U.S. President Donald Trump welcomes Australian Prime Minister Scott Morrison (not in the picture) at the White House in Washington D.C., the United States, on Sept. 20, 2019. The United States on Friday imposed sanctions on Iran's central bank and its national development fund following attacks on Saudi Arabia's oil facilities a week ago. U.S. President Donald Trump announced the new move at the White House before a meeting with visiting Australian Prime Minister Scott Morrison. (Photo by Ting Shen/Xinhua)