A rocket launched from the Gaza strip has killed a 30 year old Thai farm worker in Southern Israel. The rocket was reportedly launched by a small Islamist off-shoot which views Hamas as being too moderate; the Fatah-linked al-Aqsa Martyr's Brigade also claimed responsibility. Hamas, though not claiming responsibility itself (both of the above groups are its rivals), unsurprisingly blamed Israel for the attack, citing "the recent escalation against our people and our holy places." The latter refers to unfounded allegations that the Israelis are planning to take over the Temple Mount.
Ultimately, the decision to fire rockets lies in the hands of those who light the fuse. They're the ones who have the power to make the rocket fire stop, or perhaps the political entity that controls the region (which would be Hamas), and the buck stops with them. That being said, it remains unclear to me the grounds for believing that the continued blockade of Gaza is likely to have any impact on such terrorist attacks.