![“Borders are our red lines. Any enemy that invades these borders will not return [home],” Hossein Salami, commander-in-chief of the Revolutionary Guard](/data/cache/noticias/71006/260x165/general-hossein-salami.jpg)
By Nick Cunningham of Oilprice.com - Oil was woken out of its slumber by yet another round of escalation between the U.S. and Iran, although the matter took on greater importance to oil markets only because of a more upbeat economic outlook.

Brazilian state-run oil firm Petrobras has made natural gas discoveries in six deep-water fields in the Sergipe Basin, it said in a regulatory filing on Monday.

Argentina has opened an inquiry into what caused a massive blackout that left nearly 50 million people without power, Energy Minister Gustavo Lopetegui said on Monday.

A massive blackout left tens of millions of people without electricity in Argentina, Uruguay, Paraguay and parts of Chile and southern Brazil on Sunday. The Argentine president called it an “unprecedented” failure in the countries' interconnected power grid.

Argentina's Energy Secretary Gustavo Lopetegui described the massive blackout suffered mostly by Argentina and Uruguay, but which also affected areas of neighbouring countries, Paraguay, Chile and Brazil as “an extraordinary event that should have never happened, there are no reasons for it occurring and leaving Argentina completely in the black”.

Iran dismissed as “baseless” on Friday US accusations it executed twin attacks that left two tankers ablaze in the Gulf of Oman, raising fears of conflict in the strategically vital waterway.

More than 3,200 workers at Chile's huge Chuquicamata copper mine plan to go on strike this week after union-management talks broke down, state-run miner Codelco - the world's largest copper producer - said on Wednesday.

Oil prices tumbled 4% on Wednesday to their lowest settlements in nearly five months, weakened by another unexpected rise in U.S. crude stockpiles and by a dimming outlook for global oil demand.

The US will become a net oil exporter for the first time on a monthly basis in November, with crude and refined product exports exceeding imports by 220,000 b/d, the Energy Information Administration said on Tuesday.

ExxonMobil said on Tuesday it will proceed with a long-term oil and natural gas development project on a block in Argentina, targeting the Vaca Muerta shale play. The US-based company plans to drill 90 wells to take production to 55,000 b/d of oil equivalent in five years from the Bajo del Choique-La Invernada block in the Neuquen Basin in the country's southwest, the company said in a statement.