I was arrested by the police on suspicion of a drug-related offense. Do I have to answer the police's questions?

You have the right to remain silent, and you may refuse to answer any question. You also have the right to have a lawyer present during questioning and to an interpreter if you are not fluent in Korean. Silence is not an admission of guilt. But whether to stay silent, explain, or admit is a strategic choice — make it with your lawyer, not alone in the interview room.