Ukrainian President Volodymyr Zelensky warned NATO Monday that its member states would soon be attacked by Russian forces after an air strike hit a Ukrainian military base close to the Polish border.

Meanwhile, the death toll in the strategic southern port city of Mariupol, facing acute deprivation amid a prolonged siege, has topped 2,000, officials there said.

While western Ukraine has largely been spared so far, Russian airstrikes overnight Saturday into Sunday carried the war deep into the west, killing 35 people and wounding 134 at a military base near Yavoriv, outside the city of Lviv — which is dangerously close to the frontier with EU and NATO member Poland.

“If you do not close our sky, it is only a matter of time before Russian missiles fall on your territory, on NATO territory, on the homes of NATO citizens,” Zelensky said in a video address released shortly after midnight, urging NATO to impose a no-fly zone over his country.

Washington and its EU allies have sent funds and military aid to Ukraine and imposed unprecedented economic sanctions on Russia.

Zelensky has continued to implore foreign counterparts to do more.

“Last year, I clearly warned NATO leaders that if there were no harsh preventive sanctions against the Russian Federation, it would go to war,” Zelensky said. “We were right.”

A number of Israeli technology companies have suspended or pulled their commercial operations in Russia over its ongoing war on Ukraine, amid an avalanche of coordinated government sanctions by Western nations and a boycott by private and public companies that began days after Russian troops invaded Ukraine on February 24.

As the war rages on, these punitive measures against Moscow have been gaining pace.

By Sunday March 13, over 350 companies, including tech firms, major manufacturers and consumer brands have either suspended or halted their operations in Russia altogether or have restricted their services in order to pressure the Kremlin over the war, according to a running tally kept by a team of researchers from Yale University. The list includes Visa, Apple, Facebook, Mastercard, Amazon, Google, Ford, Dell, DHL, and McDonald’s, as well as a host of luxury brands.

These moves have been coupled with far-reaching sanctions by Western governments on Russian agencies, companies, and individuals such as President Vladimir Putin as well as dozens of oligarchs, the scale of which economic analysts say is unprecedented.

The oligarchs — government officials and business owners who have amassed vast wealth and considered Putin’s loyalists — are seen as somewhat vulnerable because much of their wealth is tied to Western interests.

Ukrainian President Volodymyr Zelensky suggested on Saturday that negotiations between Ukraine and Russia to end the war could be held in Jerusalem.

The Ukrainian leader also told media he believed Israel could provide security guarantees for his country, and said he hoped Prime Minister Naftali Bennett would have a positive influence on negotiations.

Zelensky spoke at a special briefing for reporters from Kyiv, under heavy guard.

“We generally support mediation by anyone,” he said in an answer to a question about Israel’s potential role, posed by a reporter for Haaretz. “But I wouldn’t call Prime Minister Bennett ‘anyone.’ You can play an important role because Israel is a country with a rich history.”

Zelensky added that Ukrainian immigrants were among Israel’s founders, “who brought with them their history and their desire to build a great country, as it is now. So it’s not bad at all for us to have such mediation.”

He said he told Bennett he did not believe negotiations could take place in Russia, Ukraine, or Belarus.

“These are not places where we can come to any understandings on ending the war — I’m not talking about technical meetings but meetings between leaders. I believe Israel can be such a place, especially Jerusalem. I think so, and I said this to Bennett.”

A US official said Russia asked China for military equipment in its invasion of Ukraine, a request it says will heightened tensions about the ongoing war ahead of a Monday meeting in Rome between top aides for the US and Chinese governments.

In advance of the talks, White House national security adviser Jake Sullivan bluntly warned China to avoid helping Russia evade punishment from global sanctions that have hammered the Russian economy. “We will not allow that to go forward,” he said.

The prospect of China offering Russia financial help is one of several concerns for President Joe Biden. A US official, speaking on condition of anonymity to discuss sensitive matters, said that in recent days, Russia had requested support from China, including military equipment, to press forward in its ongoing war with Ukraine.

The official did not provide details on the scope of the request. The request was first reported by the Financial Times and The Washington Post.

The Biden administration is also accusing China of spreading Russian disinformation that could be a pretext for Russian President Vladimir Putin’s forces to attack Ukraine with chemical or biological weapons.

Russia’s invasion of Ukraine has put China in a delicate spot with two of its biggest trading partners: the US and European Union. China needs access to those markets, yet it also has shown support for Moscow, joining with Russia in declaring a friendship with “no limits.”