When Ronald Reagan arrived at the White House in 1981, the consensus was that, with regard to the Soviet Union, two responsible policy choices presented themselves: détente, or a return to the Truman-era policy of containment. Reagan, however, insisted that the USSR’s influence could not just be checked but rolled back, and without massive bloodshed. A decade later, the Soviet empire collapsed entirely. In crafting a policy toward the Islamic Republic today, David Ignatius urges the current president to draw on Reagan’s success:

A serious strategy to roll back Iran would begin with Syria. The U.S. would maintain the strong military position it has established east of the Euphrates and enhance its garrison at Tanf and other points in southern Syria. Trump’s public comments suggest, however, that he wants to pull these troops out, the sooner the better. This would all but assure continued Iranian power in Syria.

Iraq is another key pressure point. The victory of militant Iraqi nationalist Moqtada al-Sadr in [last week’s] elections should worry Tehran as much as Washington. Sadr has quietly developed good relations with Saudi Arabia, and his movement may offer the best chance of maintaining an Arab Iraq as opposed to a Persian-dominated one. But again, that’s assuming that Washington is serious about backing the Saudis in checking Iran’s regional ambitions. . . .

The Arabs, [however], want the U.S. (or Israel) to do the fighting this time. That’s a bad idea for America, for many reasons, but the biggest is that there’s no U.S. political support for a war against Iran. . . .

Rolling back an aggressive rival seems impossible, until someone dares to try it.

Two extraordinary events demonstrate something important about Israel’s most fervent adversaries. One was a speech given at something called The People’s Forum (funded generously by Goldman Sachs), which stated, “When the state of Israel is finally destroyed and erased from history, that will be the single most important blow we can give to destroying capitalism and imperialism.”

The suggestion that this tiny state is the linchpin of a global, centuries-old phenomenon like capitalism goes well beyond anything resembling rational criticism. Even if Israel were guilty of genocide, apartheid, and oppression—which of course it is not—it would not follow that its destruction would help end capitalism or imperialism.

The other was an anti-Israel protest that took place in front of New York City’s Memorial Sloan Kettering Cancer Center, deemed “complicit” in Israel’s evils. At organizers’ urging, participants shouted their slogans at kids in the cancer ward, who were watching from the windows. Given Hamas’s indifference toward the lives of Gazan children, such callousness toward non-Palestinian children from Hamas’s Western allies shouldn’t be surprising. The protest—like the abovementioned speech—deliberately conveyed the message that Israel is the ultimate evil and its destruction the ultimate good, cancer patients be damned.

The fact that Israel’s adversaries are almost comically perverse does not mean that they can be dismissed. If its allies fail to understand the obsessive and irrational hatred that it faces, they cannot effectively help it defend itself.