Tensions between Peru and Chile have been heightened by a dispute over the origin of the potato and the attempt by a Chilean researcher to register some potato varieties as Chilean heritage. The researcher's claims have been met with strong opposition from Peru, leading to the Peruvian government's decision to protect the potato's identity and begin the process of international patenting. The issue has become a source of cultural and national pride for both countries, with claims dating back thousands of years to the domestication of the potato.