WRAPUP 2-Pressed by left, Greece's Tsipras vows "thus far and no further"
July 29, 2015 at 13:23 PM EDT
ATHENS, July 29 (Reuters) - Greek Prime Minister Alexis Tsipras, struggling to contain a revolt in his left-wing Syriza party, said on Wednesday that his government would not implement reform measures beyond those agreed with lenders at a euro zone summit this month.