Since Israel unilaterally withdrew from the Gaza Strip in 2005, terrorists have fired more than 15,000 rockets and mortars into Israel, putting nearly one million Israeli citizens under direct threat everyday.
Since 2001, this rocket terrorism has left more than 60 civilians dead, 1,500 injured, and hundreds of thousands traumatized.
Hamas' arsenal includes mortars and rockets such as the upgraded Qassam, Katyusha, GRAD, and the new Iranian M-302, M-75, and Fajr-5. These weapons have ranges that can reach most of Israel's population centers such as Ashdod (population 200,000), Beersheba (pop. 197,000), Ashkelon (pop. 113,000), Rehovot (pop 113,000), Sderot (pop. 22,000), and now the major cities of Tel Aviv and Jerusalem.
Sources: Israel Defense Forces Blog