Okay, so FM 34-52 is a book that talks about how to ask questions to people who might know important information. It's like playing detective and trying to find clues, but instead of finding them yourself, you ask people questions to help you.
In the book, it helps people who work for the government or military to talk to people who might be considered "enemy" or "suspect" to get information that can be helpful. But there are rules to follow because everyone has the right to privacy and to not be hurt.
The book talks about how to make the person you're talking to feel comfortable and not scared. It's important to listen to them and not force them to talk if they don't want to. If you're nice to them, they might be more willing to talk to you.
But at the same time, the book also talks about how to tell if the person is lying or not telling the whole truth. You can ask them more detailed questions or compare their answers to other information you know to see if they're telling the truth.
Overall, the book teaches people how to talk to other people in a respectful way to get important information, but also how to be careful and not be fooled by lies. It's like being a good listener and a good detective all at once!