Here, Mrs. Brown is trying to explain a complex political situation to children, so it makes sense that her metaphors would be a little simplistic. However, this is another example (like when Oscar asked about the Thanksgiving skit) of Mrs. Brown refusing to answer any questions that might be politically controversial. While the Thanksgiving situation seemed like Mrs. Brown blatantly not wanting to criticize America, this one is a little more complicated—it’s possible that she, too, feels that she cannot speak freely in her classroom, even if she wanted to explain the cause of the embargo (which has to do with Trujillo’s policies). Mrs. Brown probably isn’t allowed to say anything critical of the government, so she stays silent to protect herself and her students.