A mummy was found in Egypt, and to learn more about it, the three best forensic teams of the world decided to start a competition.
The CIA went first. They studied the mummy for a year, and then came up with a result: the person lived around 1000 years BC, plus or minus 200 years.
The Mossad goes next. They study the mummy for a month, and conclude: it was a pharaoh who ruled 1000 years BC, give or take 100 years.
The KGB team goes next. They hold the mummy for a week, and then come up with this: it was Pharaoh Ramenhotep the Second, born 1022 BC, became king after murdering his uncle, ruled for five years, on the third year of his reign the Nile flooded Luxor, on the fourth year the hittites attacked.
Everyone is perplexed: “How did you find all this out?”
“He confessed.”