At common law, you cannot gain title by adverse possession against the government. However, for leaseholds, it's all going to be determined by the pertinent st

At common law, you cannot gain title by adverse possession against the government. However, for leaseholds, it's all going to be determined by the pertinent statutes. That's even more true for Ecuador, which - as far as I know - is not a common law country. The real issue is that ejecting him from the embassy is, in effect, ejecting him from the sovereign territory of Ecuador. Depending on the exact basis they claimed when allowing him to stay, it could constitute refoulement of an asylee, which would violate international law.