The 1966 National Opposition Union ( - UNO) was a Nicaraguan political coalition founded on October 24, 1966, by the Conservative Party (PC), the Social Christian Party (PSC) and the Independent Liberal Party (PLI) to challenge the candidacy of

Anastasio Somoza Debayle Anastasio "Tachito" Somoza Debayle (; 5 December 1925 – 17 September 1980) was a Nicaraguan politician who served as the 53rd President of Nicaragua from 1967 to 1972 and again from 1974 to 1979. As head of the National Guard (Nicaragu ...

in the 1967 Nicaraguan general election. The UNO nominated Fernando Agüero as their candidate. On January 22, 1967, UNO staged a massive demonstration in the capital city Managua in support of the candidacy of Agüero.

ordered the National Guard to attack the march and over 500 people were killed in a massacre. After the defeat of UNO in the 1967 election, Agüero signed the "Kupia-Kumi Pact" with Somoza whereby the Conservatives had their congressional quota increased to 40 per cent, a constituent assembly was established, and a

triumvirate A triumvirate () or a triarchy is a political institution ruled or dominated by three individuals, known as triumvirs (). The arrangement can be formal or informal. Though the three leaders in a triumvirate are notionally equal, the actual distr ...

composed of Agüero and two Somocistas designated to rule from 1972 to 1974.

Sources

Library of Congress
1966 establishments in Nicaragua Defunct political party alliances in Nicaragua Political opposition alliances Political parties established in 1966 Political parties with year of disestablishment missing {{Nicaragua-party-stub