The ICE U.S. Dollar Index DXY, which tracks the value of the buck against a basket of currencies of the U.S.'s largest trading partners, rose 0.6% on Tuesday. Just three days earlier, the dollar index ...

World leaders had hoped to secure U.S. backing for tougher sanctions on Russia, which struck Ukraine with missiles and drones overnight. Central-bank officials, who meet this week, are in a holding ...