The failure of the peace process, increased Palestinian terror and occasional attacks by Hezbollah from Lebanon, led much of the Israeli public and political leadership to lose confidence in the Palestinian Authority as a peace partner. Most felt that many Palestinians viewed the peace treaty with Israel as a temporary measure only. Many Israelis were thus anxious to disengage from the Palestinians. In response to a wave of suicide bomb attacks, culminating in the Passover massacre (see List of Israeli civilian casualties in the Second Intifada), Israel launched Operation Defensive Shield in March 2002, and Sharon began the construction of a barrier around the West Bank. Around the same time, the Israeli town of Sderot and other Israeli communities near Gaza became subject to constant shelling and mortar bomb attacks from Gaza.