In July 2006, a Hezbollah artillery assault on Israel's northern border communities and a cross-border abduction of two Israeli soldiers precipitated the month-long Second Lebanon War. On 6 September 2007, the Israeli Air Force destroyed a nuclear reactor in Syria. At the end of 2008, Israel entered another conflict as a ceasefire between Hamas and Israel collapsed. The 2008–09 Gaza War lasted three weeks and ended after Israel announced a unilateral ceasefire. Hamas announced its own ceasefire, with its own conditions of complete withdrawal and opening of border crossings. Despite neither the rocket launchings nor Israeli retaliatory strikes having completely stopped, the fragile ceasefire remained in order. In what Israel described as a response to more than a hundred Palestinian rocket attacks on southern Israeli cities, Israel began an operation in Gaza on 14 November 2012, lasting eight days. Israel started another operation in Gaza following an escalation of rocket attacks by Hamas in July 2014. In May 2021, another round of fighting took place in Gaza, lasting eleven days.