In 2007 the Israeli Air Force destroyed a nuclear reactor in Syria. In 2008, a ceasefire between Hamas and Israel collapsed, resulting in the three-week Gaza War. In what Israel described as a response to over a hundred Palestinian rocket attacks on southern Israeli cities, Israel began an operation in the Gaza Strip in 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 and Israel, lasting eleven days.