Hamas has stated it will not police militants who continue to attack Israel despite the truce. It will, however, hold Israel accountable for any defensive measures it takes in response to the rocket attacks.
Without directly quoting this cr(AP) article, Hamas essentially claims it would be un-Islamic to confront squads launching the missiles or challenge a "resistance fighter." But when border crossings were limited in retaliation, Hamas whined that Israel was in "clear violation" of the truce.
For the life of me, I don't know where Israel gets its patience. If it were my call, Gaza would have been carpet bombed and razed long ago. Islam will not destroy Israel. Political correctness just might.