Since 2001, Palestinian militants have launched thousands of rocket and mortar attacks on Israel from the Gaza Strip as part of the continuing Arab–Israeli conflict. From 2004 to 2014, these attacks have killed 27 Israeli civilians, 5 foreign nationals, 5 IDF soldiers, and at least 11 Palestinians and injured more than 1900 people, but their main effect is their creation of widespread psychological trauma and disruption of daily life among the Israeli populace. Medical studies in Sderot, the Israeli city closest to the Gaza Strip, have documented a post-traumatic stress disorder incidence among young children of almost 50%, as well as high rates of depression and miscarriage. A public opinion poll conducted in March 2013 found that most Palestinians do not support firing rockets at Israel from the Gaza Strip. Another poll conducted in September 2014 found that 80% of Palestinians support firing rockets against Israel if it does not allow unfettered access to Gaza. These rocket attacks have caused flight cancellations at Ben Gurion airport.
The weapons, often generically referred to as Qassams, were initially crude and short-range, mainly affecting Sderot and other communities bordering the Gaza Strip. In 2006, more sophisticated rockets began to be deployed, reaching the larger coastal city of Ashkelon, and by early 2009 major cities Ashdod and Beersheba had been hit by Katyusha, WS-1B and Grad rockets. In 2012, Jerusalem and Israel's commercial center Tel Aviv were targeted with locally made "M-75" and Iranian Fajr-5 rockets, respectively, and in July 2014, the northern city of Haifa was targeted for the first time. A few projectiles have contained white phosphorus said to be recycled from unexploded munitions used by Israel in bombing Gaza.