How far is Iran willing to go for revenge? That's the question on many people's minds after Iranian missiles attacked two Iraqi airbases that house U.S. troops Tuesday night.
MORE: Iran Foreign Minister: We do not seek escalation or war
"It's not a surprise to anyone that Iran would respond," Reserve Marine Lt. Colonel Timothy Miller said.
Miller specializes in counterintelligence and says the missile attacks may not stop here.
"I think the big question is, what will be the U.S's response? And we must be vigilant with Iran. They're not going to stop at one attack," Miller said.
So, the question is, are we at war with Iran?
"I think that's a great question. The definition of war where military forces are attacking military forces certainly we are at war. Now whether it's the political definition of war, congressional approved that remains to be seen," said Miller.
President Trump has previously warned of more possible strikes if Iran retaliated.
Miller said since Iran is a sponsor of terrorism, any further Iranian action could head in that direction.
"That's an absolute certainty. There's no question that Iran knows they will not be able to do a traditional military battle with the United States," he said.
Miller says, from here he believes Iran knows this is a conflict they are going to lose. He says the big question is how much back and forth Iran wants to go through before this ends.