Hamas is having trouble with their population at home. The gazans are losing patience with this Palestinian rift, and Hamas rule as well as the siege and want to see it come to an end. Hamas is trying to escalate exchanges with Israel so that their people would be unified, sassan did it with Kuwait, kimjong il did it with the south Korean island shelling. The best thing Israel can do is not retaliate, and let the population discontent spread.
U.S. House Speaker Boehner brushes off call for his ouster (Reuters)
from the article: IDF strikes Gaza five times following recent mortar barrage