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| 1970, July 31 |
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| Dan Mitrone, a U.S. official who trained police in repressive activities, was captured and executed by the Tupamaros. The execution highlighted U.S. complicity in the terrorist methods used by the regime, but also tarnished the Tupamaros' “Robin Hood” image. | 1 |
| The Tupamaros kidnapped one Brazilian and two American officials, whom they held hostage pending release of 150 political prisoners. Pacheco Areco refused to negotiate with them. | 2 |
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| 1971, Feb. 14 |
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| Progressive factions from the two ruling parties formed the Frente Amplia (Broad Front) to contest the 1971 elections. Unhappy with the traditional parties' rightward drift, the Frente included Socialists, Communists, and Christian Democrats. The Tupamaros called a cease-fire and declared their support for Frente Amplia presidential candidate Gen. Líber Seregni Mosquera. | 3 |
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| Nov. 28 |
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| In elections widely believed fraudulent, ultraconservative Colorado candidate Juan María Bordaberry was elected and declared president (Dec. 2). | 4 |
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