Mexico, Argentina, and a Colombian university dean signed a treaty to create a space agency. Which is... interesting. Combining the budgets of the Mexican and Argentine one, you get an annual 53 million dollars. Which is... six million dollars more than the Brazilian effort. Which is about 0.2% of NASA’s budget.
I don’t think Mexico has any launch sites, very mountainous Colombia probably doesn’t either, which means that the launch sites would probably center around Argentina.
I don’t really understand the logic behind this partnership other than making noise (Mexico in particular, has just slashed academic research budgets... again), but... OK!
Why did they throw the Caribbean in? Because why the fuck not!