JERUSALEM — Hamas is the party that keeps extending this summer’s bloody battle in the Gaza Strip, repeatedly breaking temporary truces and vowing to endlessly fire rockets into Israel until its demands are met. But the latest round of fighting appears to have given Israel the upper hand in a conflict that has already outlasted all expectations and is increasingly becoming a war of attrition.

Barrages of rockets from Gaza sailed into Israel nearly nonstop on Thursday, but they did little damage, and a Hamas threat against Ben-Gurion International Airport failed to materialize. Israel, meanwhile, killed three top commanders of Hamas’s armed wing in predawn airstrikes, and by afternoon had called up 10,000 reservists, perhaps in preparation for a further escalation but in any case a show of strength.

Israel’s advantage has never looked more lopsided. In contrast to the earlier phase of the war, Israel this week deployed its extensive intelligence capabilities and overwhelming firepower in targeted bombings with limited civilian casualties less likely to raise the world’s ire.

Hamas, the Islamist Palestinian faction that dominates Gaza, buried some of its most beloved and effective leaders while launching largely futile homemade rockets from its depleted stock.