Hamas's charter includes the aspiration that 'The Day of Judgment will not come about until Muslims fight the Jews (killing the Jews)'. While many concentrate on its death-cult worship, its blood-thirsty killing of adversaries, or its contempt for women, Christians and homosexuals, it is this aspiration for genocide that is at the root of Hamas activities.
This is the primary reason why Hamas, the governing regime in Gaza, will never recognise or accept a peace accord with Israel in any form.
Since Israel left Gaza in 2005, thousands of rockets have rained down on Israeli cities and towns in deliberate contravention not just of international law, but all humanity and morality.
While some might suggest the so-called blockade is the cause of the attacks, it is actually a consequence. The restrictions were only implemented two years after Israel left Gaza, when it was clear that instead of building a "Singapore of the Middle East", Hamas was interested in importing stockpiles of weapons from places like Iran. Instead of building a future for its people, Hamas built an open-air prison for the million and a half inhabitants who fell into its grasp.