Tuesday's bombing at Istanbul Ataturk Airport could not have come at a worse time for Turkey.

The attack, which early reports suggest has left at least 36 dead and dozens more injured, comes as the Turkish economy was already reeling after tourism plunged following attacks in Ankara and Istanbul.

Making matters worse was a decision by Russian President Vladimir Putin to advise Russians not to travel to Turkey following the downing of a Russian bomber.

But while the potential for further damage to the Turkish economy seems clear, what is less apparent is who actually is responsible.

Early reports -- and it must be stressed that these are only preliminary -- suggest that there were at least three perpetrators carrying automatic rifles who died after setting off suicide bombs.

Read the full article on CNN.com.