In the past few weeks, Palestinian Islamic Jihad (PIJ) operatives in Gaza have shot at Israeli soldiers, attempted to plant bombs along the border fence, and launched improvised explosives and rockets at Israeli towns and cities. As Yossi Mansharoff explains, PIJ has a long and close relationship with the Islamic Republic, going back to the group’s founder who drew his inspiration from Iran’s theocratic rulers. It is thus no surprise that Islamic Jihad has become Tehran’s main proxy in the Gaza Strip, where its military might is second only to Hamas’s:

Iran began financially assisting [the] organization during the outbreak of the first intifada, if not earlier, and also began to smuggle military equipment to [its operatives] in the West Bank and Gaza. . . . With the outbreak of the second intifada in 2000, the organization’s terrorist activity escalated significantly, following a substantial increase in the financial aid provided by Iran. U.S. officials have claimed that Tehran gave PIJ a bonus of millions of dollars for every terrorist attack against Israel. The organization’s leader, Ramadan Shalah, sent his people . . . payments from Iran and instructions regarding the carrying-out of attacks from his headquarters in Damascus.

Despite its attempt to maintain a somewhat independent decision-making process, [today] PIJ is tied to Tehran ideologically, militarily, and financially, so it will find it difficult to deviate from the policy of its Iranian patron. . . . Iran remains PIJ’s only weapons provider and the organization’s sole supporter. [For its part], Iran needs PIJ as a means of maintaining a strategic anchor against Israel, especially in light of its complex relations with Hamas.

While in recent years Israel has been concentrating on preventing Iran’s efforts to establish itself on the northern front, it should at the same time endeavor to curb Iran’s hold on the Gaza Strip. Limiting PIJ’s economic and military capability is a common Israeli and American interest. PIJ was declared a Foreign Terrorist Organization by the United States in 1997, following the brutal terrorist attacks it perpetrated against Israel with Iranian support, in which American citizens were also killed, and after senior PIJ officials established themselves on U.S. soil and the organization carried out fundraising activities throughout the U.S. This definition allows for a series of legal measures to be taken, designed to deprive the organization of financial capabilities.

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.