allende began to fear his opponents, convinced they were plotting his assassination. using his daughter as a messenger, he explained the situation to fidel castro. castro gave four pieces of advice: convince technicians to stay in chile, only sell copper for us dollars, avoid extreme revolutionary acts which would give opponents an excuse to wreck or control the economy, and maintain a proper relationship with the chilean military until local militias could be established and consolidated. allende attempted to follow castro's advice, but the latter two recommendations proved difficult.