Three presidents in a week: why can't Peru vote for keeps?

In the space of a single week Peruvians had three different presidents. In fact, Peru’s highest office appears to be one of the great poisoned political chalices of our time: since 1985 all but two of those who claimed it have been impeached, imprisoned or investigated for criminal offences.

When police arrived last year at the home of one of them, Alan Garcia, 69, he quietly went to his bedroom and shot himself. When a successor, , was voted out of office by congress on November 9, he appeared almost relieved. As he stepped out of the presidential palace in Lima he was asked if he planned to appeal. “No, I am just going home,” he said.

So what has led to this odd

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