Translation of detrás de

He wants to say that peace and brutality are very connected. In one line he is talking about the cleanness and in the next line he is talking about the witches' broth. How good is that, isn't it?
However, the option of creating new lessons with multiple answers is now widely used by our users (teachers and students). However, we believe rather in context and single answers ant not multiple options.
I went to the desk of Aerolineas Mexicanas and postponed my flight by two days. I did not have to get prepared as I had done some homework before coming here. The backup plan was Isla Mujeres.