How Terrorism Came Back to Turkey

Recent attacks are rooted in unexpected causes.

A suicide bomber identified as an Islamic State (IS) militant killed ten tourists and wounded fifteen others in Istanbul’s historic Sultanahmet neighborhood on Tuesday. The attack was the third IS-linked suicide bombing in Turkey in the last six months. But Turkey’s terrorism problem extends beyond the Islamic State. The country is now exposed to myriad enemies from a range of radical ideologies.

Tuesday’s IS suicide bombing, much like the previous two IS attacks, was unfortunately predictable. For more than four years, since the outbreak of the Syrian civil war, Turkey turned a blind eye to the jihadists operating along its Syrian frontier. Ankara allowed jihadists to exploit the border as part of its strategy of toppling Syrian dictator Bashar al-Assad and stifling Syrian Kurdish nationalist efforts. Two years ago, the Islamic State began to exploit the border as well. But Turkey was late to acknowledge the growing threat. By the time Ankara stepped up security, IS had already taken control of two Syrian border towns and entrenched itself deep into Turkish territory, including Istanbul and Ankara.

Turkey was able to keep a lid on the problem for four years. But Ankara’s luck ran out in July 2015, when an IS-linked suicide bomber killed thirty-two in Suruç, a Turkish town near the Syrian border. After sitting on the sidelines of the global effort against the Islamic State, Turkey finally declared war against the jihadist group on its border. Less than three months later, twin suicide bombs exploded at a peace rally in Ankara, killing over 100 and becoming Turkey’s deadliest attack.

But IS is only one of Turkey’s terror threats. Responding to Tuesday’s attack, Turkish President Recep Tayyip Erdoğan warned that Turkey was also threatened by the Kurdish nationalist Kurdistan Workers’ Party (PKK), its Syrian affiliate the People’s Defense Units (YPG) and the Marxist Revolutionary People's Liberation Party–Front (DHKP-C), and that he saw little difference among these enemies of the state.

Kurdish nationalists have long threatened Turkish national security, and the Syria conflict has arguably emboldened the Kurds, particularly on the Syrian side of the border. But the conflict with the Kurds was one that was, until recently, believed to be over. The AKP, recognizing Turkey’s terror problem could not be resolved solely by military means, had launched a “Kurdish opening” in 2009 to expand the cultural rights of Kurds, and entered peace negotiations with the PKK in 2012.

These efforts were part of broader policy known as “zero problems with neighbors” promoted by then foreign minister and now Prime Minister Ahmet Davutoğlu. The policy was intended to establish better ties with all of Turkey’s neighbors. For years, Turkey’s uneasy relations with Iran and Syria had contributed to PKK militants establishing their operational bases in those countries and Iraq. In seeking better political and economic ties with its neighbors, Ankara’s aim was to increase security cooperation with these governments, too.

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