Netanyahu
Netanyahu

Israeli Prime Minister Benjamin Netanyahu on Sunday issued a stark warning to Iran, saying his nation was prepared to go to war if the Iranians continue to test Israeli red lines in Syria.

Brandishing what he said was a fragment of an Iranian drone shot down over Israeli territory last week, Netanyahu cited Iranโ€™s efforts to โ€œcolonizeโ€ Syria with a permanent military base and use the war-ravaged nation as a launch pad for operations in Israel.

โ€œIsrael will not allow Iranโ€™s regime to put the noose of terror around our neck,โ€ he said. โ€œWe will act without hesitation to defend ourselves. And we will act, if necessary, not only against Iranian proxies that are attacking us but against Iran itself.โ€

The warning came in a widely anticipated speech Netanyahu delivered to the Munich Security Conference, the worldโ€™s most prominent gathering of its type. The saber-rattling address was followed later Sunday with a speech by Iranian Foreign Minister Mohammad Javad Zarif.

โ€œMr. Zarif, do you recognize it?โ€ Netanyahu asked as he held the drone fragment aloft. โ€œYou should. Itโ€™s yours. You can take back with you a message to the tyrants of Tehran: Do not test Israelโ€™s resolve.โ€

In his own speech, Zarif dismissed Netanyahuโ€™s address as a โ€œcartoonish circus.โ€

The Iranian foreign minister cited โ€œalmost daily incursions into Syrian airspaceโ€ by Israeli aircraft, its strikes against targets in Lebanon and its occupation of Palestinian lands.

โ€œIsrael uses aggression as a policy against its neighbors,โ€ he said. He suggested that Netanyahu was deliberately raising tensions as a way to distract from his troubles at home.

Netanyahu has for years been making dire predictions about the potential for war with Iran, a regional power that he on Saturday described as โ€œthe greatest threat to our world.โ€

But the dynamic is different now: Netanyahu is weakened domestically, with police investigators recommending he should be charged with corruption. He also feels emboldened abroad, as he finds new allies in President Donald Trumpโ€™s United States and in an Arab world that has been increasingly willing to put aside its longtime enmity toward Israel to oppose mutual Iranian rival.

The latest escalation of Middle East tensions began last weekend when Israel shot down an Iranian drone that had crossed into its airspace. Israel carried out airstrikes in Syria in retaliation for the incursion, but one of its F-16 fighter jets crashed while under fire.

The dueling speeches by Netanyahu and Zarif came with the fate of a landmark 2015 nuclear accord between Iran and the worldโ€™s biggest powers hanging in the balance.

Citing Munichโ€™s history as the setting for an infamous deal with Nazi Germany on the eve of World War II, Netanyahu also used the speech to bash the Iranian nuclear accord, saying it had โ€œunleashed a dangerous Iranian tiger in our region and beyond.โ€

The future of the deal, which was negotiated during the Obama administration, has been cast into doubt by Trump, who has said it must either be revamped or scrapped. Under the agreement, Iran agreed to end the nuclear activities that the world powers considered most troubling in exchange for an end to crippling sanctions.

Netanyahu called on European allies to take a tougher line against Iran, following the U.S. lead.

โ€œAppeasement never works,โ€ he said. โ€œThe war to prevent war is getting late โ€“ but itโ€™s not too late.โ€

In an illustration of the unofficial alliance between Israel and Arab powers against Tehran, Saudi Foreign Minister Adel al-Jubeir reinforced Netanyahuโ€™s points. He called for the nuclear deal to be revised with enhanced inspections and tougher penalties over what he called continued Iranian support for terrorism.

โ€œThe world has to extract a price from Iran for its aggressive behavior,โ€ he said.

Netanyahu predicted that if the deal cannot be revised in a way that satisfies Trump and the United States walks out on it, Iran will do โ€œnothing.โ€

Zarif called that idea โ€œdelusional.โ€

โ€œIf Iranโ€™s interests are not secured, Iran will respond. Weโ€™ll respond seriously,โ€ he said. โ€œPeople will be sorry.โ€

Zarif also called on rival nations to join Iran in a Persian Gulf dialogue to cool tensions at a time when the region was โ€œdangerously close to escalating conflicts.โ€

Former U.S. Secretary of State John Kerry, who was instrumental in negotiating the nuclear accord, rejected Netanyahuโ€™s criticism, calling his claim that the deal would enable Iran to develop an arsenal of nuclear weapons โ€œjust not accurate.โ€

โ€œIf your house is on fire, are you going to refuse to put it out because youโ€™re concerned that it might light on fire again in 15 years?โ€ he asked, a reference to Netanyahuโ€™s claim that Iran would develop warheads over the coming decade or two. โ€œOr are you going to put it out and use the intervening time to do the best you can to prevent it from ever catching fire again?โ€

Making clear that nervousness about the future of the Iran deal extends broadly across the nations that helped negotiate it, a senior Russian lawmaker said that he agreed with Kerry despite the many other issues that divide the Kremlin and the United States.

โ€œThe choice in Iran is between the agreement, the deal and a war,โ€ said Alexei Pushkov, a member of the upper house of Russiaโ€™s parliament. โ€œOkay, you bomb Iran, and then you do what? What happens next?โ€