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In the Apurimac valley, which accounts for a third of the investment, roads have been improved and villages have big new schools.
ECONOMIST: A crop that refuses to die
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The BBC's Dan Collyns in Lima says soldiers killed in the attack were part of that operation, which is focused on isolated jungle in the Ene-Apurimac valley - a hotbed for traffickers and guerrillas.
BBC: Peru rebels launch deadly ambush