1. To scare your enemies into reacting by revealing their defense strategy. 2.To scare your enemies into submission by conceding concessions. 3. To Scare the impartial parties into bribing you with aid in order to not attack. 4. To boost your image as a Hawk. 5. To manipulate the stock market and make a killing when oil prices spike!! I'd go for 5...
Mexico approves U.S. extradition warrant for fugitive kingpin 'El Chapo' (Reuters)
from the article: Netanyahu's 'catastrophe law' prevents an Iran strike