MEXICO CITY (Reuters) -- Venezuela's strongest earthquake in over a century is the biggest challenge to Delcy Rodriguez's early leadership but could also allow the interim president to stamp ​her authority on a fractured government and begin rebuilding a broken country. After two earthquakes of magnitudes 7.2 and 7.5 struck Venezuela Wednesday evening, it could take weeks for the full extent of the damage to become clear. US government data models suggested the death toll could ultimately exceed