General Discussion

He brutally suppressed protests and discriminated against the Sunni population which helped recruiting for Al-Qaeda in Iraq which later rebranded as ISIS. Iran likely supplied the Iran backed Shia militias with weapons but it was more likely Saudi Arabia or whoever that aligns with Wahabbis that supplied the Wahabbi terror group with at least funding if not weapons. The Iran backed militias were the main ones fighting ISIS in Iraq. Your point on that still stands, just adding minor clarifications.

As far as SouthAmerica there has always been a divide since World War 2 between the left and right and most of those were proxy wars for the US & Russia(Soviet Union at the time). Now that a lot of the leftist governments in South America don't have a super power backing them they are more vulnerable but there is still a possibility of revolt if the US friendly government brutally suppresses the local population in Venezuela.

US is now threatening other governments in South & Central America including Mexico. Outside of them he is even threatening Greenland. It is still too early to tell what the long term consequences of all that will be.