Luis Sánchez also uses Gas Exporting Countries Forum to push the country's claim against Chile for sovereign sea access.
Despite figures showing that violence has diminished since the government and FARC rebels ended Colombia's 53-year conflict, political stagnation has exposed cracks in the peace process.
The head of Brazil's SCGás shared the distributor's concerns about gas supply after 2020, when Petrobras' contract with Bolivia expires. "Issues of transportation and pipeline capacity still need to be solved," says Cósme Pôlese.
Citgo's acting president, Jose Pereira, was among those detained at the Caracas headquarters of state oil company PDVSA.
The lithium miner saw earnings double in the third quarter, buoyed by strong demand, which is likely to continue through 2018, CEO Patricio de Solminihac said.
The strategy is consistent with the Brazilian company's efforts to reach its deleveraging target of US$10bn by end-2018, according to analysts.
Other firms reportedly interested in the SQM stake include mining giant Rio Tinto, and the Chinese private equity firm GSR Capital, battery materials company Ningbo Shanshan and lithium producer Tianqi Lithium.