*ECB's Draghi: Underlying Inflation Expected To Rise Over Medium Term

*ECB's Draghi: Ample Degree Of Monetary Accommodation Still Necessary

*Euro Extends Fall To 3-week Low Of 1.1307 Vs Dollar Amid Draghi's Speech

*ECB's Draghi: Incoming Data Weaker Than Expected

U.S. Weekly Jobless Claims Unexpectedly Drop To 199,000