Turkish security officials work at the explosion site after a bus was struck by a bomb in Istanbul, Tuesday, June 7, 2016.
Police bus targeted in Istanbul bombing
02:51 - Source: CNN

Editor’s Note: Fadi Hakura is a Turkey expert and Associate Fellow at Chatham House, the Royal Institute of International Affairs, an independent policy institute based in London. The opinions expressed in this commentary are his.

Story highlights

Fadi Hakura says that Turkey's mounting instability arises from President Erdogan's over-centralization of power

Erdogan's attempt to impose a homogenous Turkish nationality is a recipe for escalating political violence, says Hakura

CNN  — 

Turkey, once a paragon of relative tranquility in a volatile Middle East, is engulfed by insecurity – as today’s car bomb attack against a police bus in Istanbul cruelly illustrates.

Suspicions will likely fall on the separatist militant Kurdish group the Kurdistan Workers’ Party (PKK), which carried out similar incidents in Ankara last January and March.

READ MORE: 11 killed in Istanbul car bomb

Fadi Hakura

President Recep Tayyip Erdogan will probably approve the lifting of immunity against the 50 pro-Kurdish members of parliament to facilitate criminal prosecutions against them and potentially dislodge them from their seats.

He will also use this tragedy to impress on Turkish voters that Kurdish and Islamist militancy can only be thwarted by transforming Turkey from a parliamentary system into a powerful executive presidency.

That argument does not hold water given that Turkey’s mounting instability arises not from the type of governance, but from the over-centralization of power in presidential hands.

Erdogan’s vision

Almost a month ago, Erdogan deposed his own handpicked Prime Minister Ahmet Davutoglu due to the latter’s attempts to carve out his own influence in government.

Furthermore, Erdogan’s ideological domestic and foreign policies have positioned Turkey at the heart of the factional, sectarian and ethnic strife tearing the region apart.

His campaign to impose a single religious identity based on Sunni Islam, and instil a homogenous Turkish nationality on an ethnically diverse society, is a recipe for escalating social fissures and political violence.

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Erdogan: 'I'm not at war with press'
05:56 - Source: CNN

After all, Kurds compose 18% of Turkey’s population, the overwhelming majority of whom yearn for a settlement based on greater democracy, human rights and full integration in Turkey.

Hardline foreign policy

Similarly, Erdogan has pursued a hardline foreign policy that has diminished Turkey’s influence in the Middle East and North Africa.

His hostility with Russia, and mistrust with Iran and Israel, has thwarted Erdogan’s maneuverability in Syria and contributed to the nearly 3 million migrants on Turkish territory – and violent spillovers from the Middle East.

Erdogan’s crucial relations with the U.S. are testy and have become increasingly transactional and less strategic.

These relations have been complicated by the U.S. refusal to cease cooperation with the PKK-affiliated Peoples’ Protections Units (YPG) against the ISIS.

Cold comfort from Europe

Turkey does not enjoy a warm reception with Europe either, despite negotiations over the Syrian migration crisis.

Erdogan has been threatening to tear up the EU migration deal if he does secure more concessions on visa-free travel to the Schengen Area – a collection of 26 European countries including France, Germany, and Spain.

Under the “one in, one out” deal, Syrians who cross into Greece illegally will be sent back to Turkey. For every Syrian sent back to Turkey, a vetted Syrian refugee will go from Turkey to Europe to be resettled.

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What is the 'one-for-one' deal?
00:46 - Source: CNN

In return, the EU has pledged to give Turkey billions in funding to help it provide for migrants within its borders, and grant various political concessions.

READ MORE: Greece sends first migrants back to Turkey under new EU deal

But Erdogan risks misreading the desperation of German Chancellor Angela Merkel and overplaying his hands by upping demands to an untenable level.

He should not be surprised if one day Europe exhibits near-total reticence and lack of cooperation towards him whenever he requires its assistance on a particular issue.

The spiral deepens?

Consequently, Turkey is hardly on a positive domestic and foreign policy trajectory.

There’s an increasing prospect that the country’s political, economic and external challenges will over time put additional pressure on an already stagnant Turkish economy and drag the country into a downward spiral of instability.

Unless Erdogan implements radical policy reversals, the likelihood of which looks exceedingly remote, Turkey will become more entrenched in the turbulence of the Middle East.

Watch: What is Russia’s strategy for dealing with Turkey?

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Fadi Hakura is a Turkey expert and Associate Fellow at Chatham House, the Royal Institute of International Affairs, an independent policy institute based in London. The opinions expressed in this commentary are his.