* US says Russia’s claims of of troop withdrawal from Ukraine border are “false”
* Cease-fire violations alleged by Ukraine and pro-Russian separatists
* Fed minutes indicate central bank set to move ahead on rate hikes
* US homebuilder sentiment eased again in February but remains at elevated level
* Strong increase in US import prices adds to inflation pressure in January
* US industrial output rose in January, well above expectations
* US retail sales surged in January, rebounding sharply after weak December: