Question

Choice of Law: Lex Contractus

Alex and Ben entered into a contract to buy and sell a piece of property in the Philippines. However, a dispute arose regarding the validity of the contract. Alex claims that the contract is governed by the laws of the Philippines, while Ben argues that the contract should be governed by the laws of another country where he is a citizen.

Based on the principle of lex contractus, which law should govern the validity of the contract between Alex and Ben? Discuss the relevant factors and considerations in determining the applicable law.