LIMA, Peru—Peru’s political establishment has been shaken by investigations and allegations of corruption, with one former president and his wife jailed while prosecutors investigate charges of money laundering against them, and another former president facing possible extradition from the U.S. in a similar case. What began as several national investigations into suspicious bank transfers and real estate purchases gained urgency following revelations from Brazil about an international bribery network managed by the construction conglomerate Odebrecht. The company’s executives have admitted to paying approximately $800 million in bribes to public officials in a dozen countries in order to obtain billions of […]