JERUSALEM — To Israel’s critics abroad, the picture could not be clearer: Israel’s war in Gaza is a wildly disproportionate response to the rockets of Hamas, causing untold human suffering and bombing an already isolated and impoverished population into the Stone Age, and it must be stopped.

Yet here in Israel very few, at least among the Jewish population, see it that way.

Since Israeli warplanes opened the assault on Gaza 17 days ago, about 900 Palestinians have been reported killed, many of them civilians. Red Cross workers were denied access to scores of dead and wounded Gazans, and a civilian crowd near a United Nations school was hit, with at least 40 people killed.

But voices of dissent in this country have been rare. And while tens of thousands have poured into the streets of world capitals demonstrating against the Israeli military operation, antiwar rallies here have struggled to draw 1,000 participants. The Peace Now organization has received many messages from supporters telling it to stay out of the streets on this one.

As the editorial page of The Jerusalem Post put it on Monday, the world must be wondering, do Israelis really believe that everybody is wrong and they alone are right?

The answer is yes.

“It is very frustrating for us not to be understood,” remarked Yoel Esteron, editor of a daily business newspaper called Calcalist. “Almost 100 percent of Israelis feel that the world is hypocritical. Where was the world when our cities were rocketed for eight years and our soldier was kidnapped? Why should we care about the world’s view now?”

Israel, which is sometimes a fractured, bickering society, has turned in the past couple of weeks into a paradigm of unity and mutual support. Flags are flying high. Celebrities are visiting schoolchildren in at-risk areas, soldiers are praising the equipment and camaraderie of their army units, and neighbors are worried about families whose fathers are on reserve duty. Ask people anywhere how they feel about the army’s barring journalists from entering Gaza and the response is: let the army do its job.

Israelis deeply believe, rightly or wrongly, that their military works harder than most to spare civilians, holding their fire in many more cases than using it.

Because Hamas booby-traps schools, apartment buildings and the zoo, and its fighters hide among civilians, it is Hamas that is viewed here as responsible for the civilian toll. Hamas is committed to Israel’s destruction and gets help and inspiration from Iran, so that what looks to the world like a disproportionate war of choice is seen by many here as an obligatory war for existence.

“This is a just war and we don’t feel guilty when civilians we don’t intend to hurt get hurt, because we feel Hamas uses these civilians as human shields,” said Elliot Jager, editorial page editor of The Jerusalem Post, who happened to answer his phone for an interview while in Ashkelon, an Israeli city about 10 miles from Gaza, standing in front of a house that had been hit two hours earlier by a Hamas rocket.

“We do feel bad about it, but we don’t feel guilty,” Mr. Jager added. “The most ethical moral imperative is for Israel to prevail in this conflict over an immoral Islamist philosophy. It is a zero sum conflict. That is what is not understood outside this country.”

It is true that there are voices of concern here that the war may be outliving its value. Worries over the risk to Israeli troops and over even steeper civilian casualties as the ground war escalates have produced calls to declare victory and pull out.

For many of the 1.4 million Israelis who are Arabs, the war has produced a very different feeling, a mix of anger and despair. The largest demonstration against the war so far, with some 6,000 participants, was organized by an Arab political party. But that is still distinctly a minority view. Polls have shown nearly 90 percent support for the war thus far, and street interviews confirm that Israelis not only favor it but do so quite strongly. The country’s leaders, while seeking an arrangement to stop Hamas’s ability to rearm, do not want a face-saving agreement. They want one that works, or else they want to continue the war until Hamas has lost either its rockets or its will to fire them.

Boaz Gaon, a playwright and peace activist, said he found it deeply depressing how the Israeli public had embraced the military’s arguments in explaining the deaths of civilians. But he was livid at Hamas, both for what it had done to its own people and civilians in the south, and for its impact on the Israeli left.

“Hamas has pushed Israeli thinking back 30 years,” he said. “It has killed the peace camp.”

Moshe Halbertal, a left-leaning professor of philosophy at the Hebrew University, helped write the army’s ethics code. He said he knew from personal experience how much laborious discussion went into deciding when it was acceptable to shoot at a legitimate target if civilians were nearby, adding that there had been several events in this war in which he suspected that the wrong decision had been made.

For example, Israel killed a top Hamas ideologue, Nizar Rayyan, during the first week of the war and at the same time killed his four wives and at least nine of his children. Looking back at it, Mr. Halbertal disapproves, assuming that the decision was made consciously, even if Mr. Rayyan purposely hid among his family to protect himself, as it appears he did. Yet almost no one here publicly questioned the decision to drop a bomb on his house and kill civilians; all the sentiment in Israel was how satisfying and just it was to kill a man whose ideology and activity had been so virulent and destructive.

But Mr. Halbertal takes quite seriously the threat that Hamas poses to Israel’s existence, and that issue affects him in his judgments of the war.

“Rockets from Hamas could eventually reach all of Israel,” he said. “This is not a fantasy. It is a real problem. So there is a gap between actual images on the screen and the geopolitical situation.

“You have Al Jazeera standing at Shifa Hospital and the wounded are coming in,” he continued, referring to an Arab news outlet. “So you have this great Goliath crushing these poor people, and they are perceived as victims. But from the Israeli perspective, Hamas and Hezbollah are really the spearhead of a whole larger threat that is invisible. Israelis feel like the tiny David faced with an immense Muslim Goliath. The question is: who is the David here?”

The war, of course, is portrayed differently here and abroad. What Israelis see on the front pages of their newspapers and on their evening broadcasts is not what the rest of the world is reading and seeing. Israeli news focuses on Israeli suffering — the continuing rocket attacks on Israel, the wounded Israeli soldiers with pictures from Gaza coming later. On a day last week when the foreign news media focused on Red Cross allegations of possible war crimes, Israeli news outlets played down the story.

But the Israeli news media are not so much determining the national agenda as reflecting it. Even the left and what was long called the peace camp consider this conflict almost entirely the responsibility of Hamas, and thus a moral and just struggle.

“By this stage in the first and second Lebanon wars, there were much larger street demonstrations, vigils and op-ed pieces,” said Janet Aviad, a former sociologist and peace activist. “But in this case, the entire Israeli public is angry at the immoral behavior of Hamas.”

The writer A.B. Yehoshua, who opposes Israel’s occupation and promotes a Palestinian state, has been trying to explain the war to foreigners.

“ ‘Imagine,’ I tell a French reporter, ‘that every two days a missile falls in the Champs-Élysées and only the glass windows of the shops break and five people suffer from shock,’ ” Mr. Yehoshua told a reporter from Yediot Aharonot, a Tel Aviv newspaper. “ ‘What would you say? Wouldn’t you be angry? Wouldn’t you send missiles at Belgium if it were responsible for missiles on your grand boulevard?’ ”