Is a notarized letter from parents enough to enter any country without a passport when traveling alone internationally?

Is a notarized letter from parents enough to enter any country without a passport when traveling alone internationally? No, a notarized letter from parents is generally not sufficient to enter any country without a passport when traveling internationally. Most countries require travelers, especially minors, to have a valid passport and sometimes additional documentation such as a visa or parental consent forms depending on the circumstances. It's crucial to check the specific entry requirements of the country you plan to visit well in advance of your travel date.