Between 1,095 and 1,700 <a href="https://en.wikipedia.org/wiki/Shia_Islam_in_Iraq" id="mwAYE" rel="mw:WikiLink" title="Shia Islam in Iraq">Shia Iraqi</a> people are killed in an <a href="https://en.wikipedia.org/wiki/Camp_Speicher_massacre" id="mwAYI" rel="mw:WikiLink" title="Camp Speicher massacre">attack</a> by <a href="https://en.wikipedia.org/wiki/Islamic_State" id="mwAYM" rel="mw:WikiLink" title="Islamic State">the Islamic State of Iraq and the Levant</a><sup about="#mwt124" class="mw-ref reference" data-mw='{"name":"ref","attrs":{"name":"Buratha News Agency: 4000 soldiers"},"body":{"id":"mw-reference-text-cite_note-Buratha_News_Agency:_4000_soldiers-22"}}' id="cite_ref-Buratha_News_Agency:_4000_soldiers_22-0" rel="dc:references" typeof="mw:Extension/ref"><a href="./June_12#cite_note-Buratha_News_Agency:_4000_soldiers-22" id="mwAYQ" style="counter-reset: mw-Ref 22;"><span class="mw-reflink-text" id="mwAYU">[22]</span></a></sup> on <a href="https://en.wikipedia.org/wiki/Camp_Speicher" id="mwAYY" rel="mw:WikiLink" title="Camp Speicher">Camp Speicher</a> in <a href="https://en.wikipedia.org/wiki/Tikrit" id="mwAYc" rel="mw:WikiLink" title="Tikrit">Tikrit</a>, <a href="https://en.wikipedia.org/wiki/Iraq" id="mwAYg" rel="mw:WikiLink" title="Iraq">Iraq</a>. It is the second <a href="https://en.wikipedia.org/wiki/List_of_major_terrorist_incidents" id="mwAYk" rel="mw:WikiLink" title="List of major terrorist incidents">deadliest act of terrorism</a> in history, only behind <a href="https://en.wikipedia.org/wiki/September_11_attacks" id="mwAYo" rel="mw:WikiLink" title="September 11 attacks">9/11</a>.<sup about="#mwt128" class="mw-ref reference" data-mw='{"name":"ref","attrs":{},"body":{"id":"mw-reference-text-cite_note-23"}}' id="cite_ref-23" rel="dc:references" typeof="mw:Extension/ref"><a href="./June_12#cite_note-23" id="mwAYs" style="counter-reset: mw-Ref 23;"><span class="mw-reflink-text" id="mwAYw">[23]</span></a></sup>