Translation of dechiffrieren

Yesterday, I heard a very good example to explain my point: On their journey more than ten years ago, the presidential couple Mr. and Mrs. Clinton visited Egypt. They were welcomed by the president.
They are not used to live together with other religions and cultures and they do not know how to coexist. In each region people assume things about others, but in some regions the hatred grows.
I spoke to my sister's friend and she told me I could stay at her place whenever I wanted. I then played Galaga on one of the computer machines and advanced to a very high level of the game.