Is Burgas the New Sarajevo?

There was a bomb attack on a bus carrying Israeli tourists in Bulgaria yesterday. From Reuters:

Six people were killed in a bomb attack on a bus carrying Israeli tourists at a Bulgarian airport on Wednesday and Israel accused Tehran of carrying out the attack, promising a strong response to "Iranian terror."
...Israeli Prime Minister Benjamin Netanyahu blamed Iran and said Israel would respond.
"All the signs lead to Iran. Only in the past few months we have seen Iranian attempts to attack Israelis in Thailand, India, Georgia, Kenya, Cyprus and other places," Netanyahu said in a statement.
...
U.S. President Barack Obama called the attack "completely outrageous". "The United States will stand with our allies, and provide whatever assistance is necessary to identify and bring to justice the perpetrators of this attack," he said.

It's funny how Netanyahu has immediately concluded that Iran is behind this. It seems that all the evidence he is basing this conclusion is the fact that "[t]he blast comes on the 18th anniversary of a 1994 bomb attack on the headquarters of Argentina's main Jewish organization by an Iranian-backed Hezbollah suicide bomber, which killed 85 people." Can this be the "killing of Frans Ferdinand" moment for the Iran war? The assassination of Austro-hungarian archduke in another Balkan city in 1914 led to the Great War. As EPJ's Robert Wenzel has been pointing out it seems that Wall Street has abandoned Obama. A repeat of September 2008 would mean a sure defeat for the incumbent, so is this Obama's move to display himself as strong on national security?