Lopez Obrador has called Castillo the rightful president of Peru, even as he insists his foreign policy is dictated by non-intervention in the affairs of other states. First Quantum mulling all legal options after Panama orders halt at flagship mine Canada-based miner First Quantum Minerals said it is going through "all available legal means" after the Panamanian government ordered it to pause operations at its flagship copper mine over a payments dispute. The Cobre Panama mine is considered the largest private investment in the Central American country, accounting for roughly 3.5% of its gross domestic product.