First South American Energy Summit, held at Isla Margarita, Venezuela. Leadership crisis After Colombian Ernesto Samper completed his term as Secretary General in January 2017, the UNASUR governments have been unable to reach consensus on the organization's future leadership. Venezuela, with the support of Bolivia and Suriname, has blocked the nomination of Argentine diplomat José Octavio Bordón. In August 2017, six members of UNASUR—Argentina, Brazil, Chile, Colombia, Paraguay and Peru—joined in forming the Lima Group, a coalition of Western Hemisphere nations that repudiates the Venezuela government of Nicolás Maduro as antidemocratic. In February 2018, Maduro was disinvited from the Summit of the Americas hosted by Peru (held in Lima in April 2018). In response, Bolivia's president Evo Morales urged UNASUR to defend Venezuela, stating "UNASUR should call an emergency meeting and enforce the sovereignty of a brotherly people." Morales acceded to the rotating role of president pro tempore of UNASUR on 17 April 2018. On 20 April 2018, six countries—Argentina, Brazil, Chile, Colombia, Paraguay and Peru—announced that they would suspend their own membership for a year until the regional group became more organized. Chilean Foreign Minister Roberto Ampuero stated that the organization "isn't getting anywhere, there is no integration" and that "We can't be throwing this money to an institution that doesn't work." A briefing sent to the Brazilian cabinet stated that the countries share the view that Bolivia's leadership of the block has been ineffective. Paraguayan Foreign Minister stated that his country's objection concerned the failure to put a new Secretary General in place, and the need to make the organization less ideological, but did not reflect negatively on Bolivia's leadership. Bolivian Foreign Minister Fernando Huanacuni called an emergency meeting for May 2018 to attempt to resolve the crisis. Countries renouncing the treaty Colombia On 28 August 2018, Colombian president Iván Duque announced that foreign minister Carlos Holmes had officially notified UNASUR of their intention to leave the bloc within the next 6 months, denouncing it as an institution created by Hugo Chávez to sideline existing international treaties and referring to it as an accomplice to what they referred to as the dictatorship in Venezuela. Brazil On 7 March 2019 Brazilian president Jair Bolsonaro announced that Brazil would withdraw from UNASUR and join the newly created PROSUR. Following the 2022 Brazilian general election, newly elected president Luiz Inácio Lula da Silva signalled his intention to rejoin UNASUR. Ecuador On