Venezuela's opposition strives to avoid an "internal war" to define the candidate in the presidential elections. The surprise candidacy of Manuel Rosales, governor of Zulia, put the opposition on alert.

The opposition has until April 20 to choose between Rosales or Edmundo González. Maduro, in power since 2013, seeks a third six-year term on July 28.. "I will do everything I have to do for the unit," Rosales said Tuesday, amid accusations of having "betrayed" it.