According to the Vienna Convention, foreign nationals must be informed of what right?

The correct answer is the right to consular notification. According to the Vienna Convention on Consular Relations, when a foreign national is arrested or detained, they have the right to be informed of their right to communicate with their consulate or diplomatic mission. This ensures that foreign nationals can seek assistance from their home country while they are in a foreign jurisdiction. The right to consular notification is a crucial aspect of protecting the rights and welfare of individuals who may be unaware of the legal processes or resources available to them in a foreign country.

This right plays an essential role in international law and diplomacy, facilitating communication between foreign nationals and their home governments. It is designed to ensure that individuals can access resources, legal assistance, and support from their government, which can be especially critical during legal proceedings or in situations where their rights may be at risk.