The dollar index (DXY00) today is up by +0.23%.  Weakness in the yen is underpinning the dollar as the yen tumbled to a 1.5-year low against the dollar today.  Gains in the dollar accelerated today after US Oct new home sales fell less than expected and after St. Louis Fed President Alberto Musalem said the US economy is pretty robust and that he expects above-potential growth. Gains in the dollar are limited after US December core consumer prices rose less than expected, a dovish factor for Fed policy.  ...