Jeffrey Goldberg nails it IMO:

Mahmoud Abbas, the sometimes moderate, often ineffectual leader of the Palestinian Authority, just asked his rivals in Hamas a question that other bewildered people are also asking: "What are you trying to achieve by sending rockets?"

The Gaza-based Hamas has recently fired more than 500 rockets at Israeli towns and cities. This has terrorized the citizenry, though caused few casualties, in large part because Israel is protected by the Iron Dome anti-rocket system.

In reaction to these indiscriminately fired missiles, Israel has bombarded targets across Gaza, killing roughly 100 people so far. Compared with violent death rates in other parts of the Middle East, the number is small. (More than 170,000 people have been killed in the Syrian civil war to date.) But it is large enough to suggest an answer to Abbas's question: Hamas is trying to get Israel to kill as many Palestinians as possible.

Dead Palestinians represent a crucial propaganda victory for the nihilists of Hamas. It is perverse, but true. It is also the best possible explanation for Hamas's behavior, because Hamas has no other plausible strategic goal here.

Is Hamas Trying to Get Gazans Killed?