His government was characterized by an ideological shift, inspired by Rogelio Frigerio, towards a type of developmentalism less promoted by the State and more oriented to the development of heavy industry as a consequence of the installation of multinational companies.

That day he was detained by the coup military and a decree of the Executive Power of José María Guido validated his detention without trial for eighteen months, preventing him from participating in the 1963 elections.

The position of the party led by Frondizi, the Intransigence and Renewal Movement, was one of repudiation of the military government; He proposed taking the initiative and putting pressure on him by appointing a presidential formula.

[citation needed] The UCRI managed to win in all the provinces where the Frondizi-Gómez formula was presented, with which it was obtained all the governorships, the senate and two thirds of the chamber of deputies, in elections classified as unusual until today.

[citation needed] Frondizi assigned economist Rogelio Julio Frigerio to develop a bold plan to make Argentina self-sufficient in motor vehicles and petroleum, as well as to quickly extend the country's semi-developed road and electric networks.

In the Declaration of Avellaneda (a common platform supported by Balbin's UCRP—his wing of the UCR—and Frondizi's UCRI), the state's need to invest in oil exploration and to make Argentina self-sufficient in the short term was expressed as policy.

[citation needed] In October 1960, independent Peronist unions formed the Commission of 20 to demand the return of the General Labor Confederation (CGT), which had been intervened by the government since the military coup in 1955.

Presidents Frondizi and Alessandri met in Santiago de Chile, where they made a Declaration on the "agreement that contains all the bases for the peaceful solution of pending boundary issues within the two countries" except Antarctica.

Throughout his entire government, Frondizi had meetings with Latin American figures such as Juscelino Kubitschek, Jânio Quadros, Jorge Alessandri, Manuel Prado Ugarteche, Adolfo López Mateos, Víctor Paz Estenssoro, among others.

[citation needed] Throughout the year 1960, President Frondizi carried out a European tour in which he visited Italy, The Vatican, Switzerland, France, Belgium, Germany, Holland, Great Britain and Spain.

[citation needed] The Argentine president arrived in Brussels, where he received a "warm reception"; in the speeches the reference to José de San Martín was present, for his residence during some of his years of exile.

During a speech before the OAS Frondizi denounced the deterioration of the terms of trade in the region and supported the Pan-American Operation of President Juscelino Kubitschek, whose goal was the development and formation of capital in Latin America.

Hence, at the request of the US president, a meeting between Frondizi and Ernesto Guevara was encouraged to discuss the thorny issue in addition to trying to direct relations between the two countries after the Americans failed to invade the island.

During the OAS Conference, meeting in Punta del Este in January 1961, Argentine Foreign Minister Miguel Ángel Cárcano opposed the exclusion of Cuba from the inter-American system.

In the first polls, both John Kennedy and the Cubans were willing to accept that basis for the talks: Frondizi came very close to achieving a great diplomatic solution, but did not take into account the inconveniences he would encounter on his home front.

Someone who did not belong to the diplomatic service, but who was linked to the Frondizi team, contacted Ernesto Guevara at that time (1961) and let the Argentine president know that the Cuban minister accepted his mediation to try to find a negotiated solution.

At the same time, some Argentines such as Horacio Rodriguez Larreta (father) met with Guevara in Punta del Este and participated in the famous meeting he held with Richard Goodwin, an advisor to President Kennedy.

Frondizi replied schematically: first, that he was preparing to receive him and considered the interview convenient; second, that if he was determined to travel, he should go to Montevideo Airport (Guevara was in Punta del Este): from that moment on, he would be under the responsibility of the Argentine government.

[citation needed] The meeting between President Arturo Frondizi and Ernesto Guevara caused Adolfo Mugica to resign twenty days later from his position as Minister of Foreign Affairs and Worship on August 29, 1961.

There were aspects of the future regulation for Antarctica that had the general consensus of the nations, such as the pacification of the continent and excluding all activities of a warlike nature, as well as guaranteed access for scientific research for any country that desired to do so.

Regarding the use of the territory, the Argentine Government maintained the need to put limits on absolute freedom, in order to preserve ecological interests, and to prohibit nuclear tests and the deposit of radioactive waste.

On March 8 in the afternoon, they anchored in Bahía 1º de Mayo, and then with the icebreaker General San Martín the first tributes were paid to the authorities who disembarked, being transferred by helicopters and boats to the detachment where the honors were repeated.

[citation needed] Since the previous day, a group of civilians and soldiers had been moving against the clock and in the midst of great difficulties, to carry out Frondizi's latest plan, destined to save what could be legally, making Guido swear before the Supreme Court, under of the law of acephalia.

Potash says that four men played the most important roles in this operation: Defense Minister Rodolfo Martínez, Supreme Court President Julio Oyhanarte, Air Force Commander-in-Chief and one of the coup leaders Brigadier Cayo Alsina, and himself Arturo Frondizi.

Aware of the fact and with Guido on his way to court, Martínez went to the Casa Rosada to buy time and prevent the military from formally taking over the government, especially Poggi, who showed a clear intention to assume as president.

[citation needed] On Friday, October 28, 1999, a plaque with the name of the former Argentine president was discovered in a square in the city of Gubbio, in the Italian region of Umbria where Frondizi's parents were born, on the occasion of the anniversary of his birth.

[citation needed] Argentine politicians such as Cristina and Néstor Kirchner, Roberto Lavagna, Ricardo López Murphy and Eduardo Duhalde (among others), claimed to be admirers of Arturo Frondizi's management, regardless of their ideology or political party.

[citation needed] Ten years after his death, a tribute was paid at the central headquarters of Banco Nación, on Rivadavia Avenue, in front of the Casa Rosada, where more than one hundred and fifty friends and great followers of him gathered.

Through his permanent developmentist affirmation, he opened a path that Argentines must necessarily travel, said Raúl Alfonsín, who praised Frondizi in this way despite the fact that they had both belonged to different lines of radicalism, which were very much at odds at that time.

[citation needed] On March 6, 2008, the Legislature of the City of Buenos Aires renamed the 9 de Julio Sur Highway with the new name of Autopista Presidente Arturo Frondizi in homage to the former Argentine president.