This is the third time recently that Arab protesters have attacked foreign embassies in protest for actions by that country, and a message needs to be sent that this is not an acceptable way for problems to be handled. Attacking embassies is not a legitimate form of protest. It is an act of war, and a foolish and cowardly one at that. Embassies need to be protected in order to ensure communications between governments, and there need to be consequences for attacks such as this.
Law expanding definition of terrorist activity passes first Knesset reading (Haaretz)
from the article: U.K.: Iran faces 'serious consequences' over embassy attacks