High-level secret talks between the Turkish government and Kurdistan Workers' Party (PKK) collapsed in June 2011 followed by escalating violence. A ceasefire was later reached on March 21, 2013 but broke down on July 25, 2015.
Perpetrator for the Istanbul airport attack on June 29, 2016 is categorized as "unknown" as investigation is still ongoing.
Source: Data until 2014 is from
Global Terorrism Database
. Data for 2015 and 2016 is compiled from media reports.
Kuang Keng Kuek Ser / PRI