WASHINGTON — Secretary of State Antony Blinken said Thursday in Israel that 25 US citizens are now confirmed killed by Hamas terrorists and vowed America would stand by the Jewish state — as Israeli Prime Minister Benjamin Netanyahu showed him photos of butchered and burned babies who were among the more than 1,300 slain in Saturday’s attack from Gaza.

Blinken likened Hamas’ massacres to Nazi war atrocities during a Tel Aviv press conference alongside Netanyahu, who called on countries to cease cooperation with Hamas — whose political leader, Khaled Mashal, resides in Qatar.

“I come before you, not only as the United States Secretary State, but also as a Jew,” Blinken told the Israeli leader.

“My grandfather, Maurice Blinken, fled pogroms in Russia. My stepfather, Samuel Pisar, survived concentration camps — Auschwitz, Dachau, Majdanek. So, prime minister, I understand on a personal level the harrowing echoes that Hamas massacres have carried for Israeli Jews — indeed, for Jews everywhere.”

Blinken did not provide an update on the number of Americans suspected to be held in captivity in Hamas-ruled Gaza. About 150 people are feared to be hostages and a spokesman for Hamas threatened Monday to murder them on camera in response to Israeli airstrikes.

The White House has said that 17 American citizens are unaccounted for after Saturday’s carnage, but warned that number is likely to fluctuate as more information comes in.

“The message that I bring Israel is this: You may be strong enough on your own to defend yourself, but as long as America exists, you will never, ever have to. We will always be there by your side,” Blinken added.

“We’re delivering on our word, supplying ammunition and interceptors to replenish Israel’s Iron Dome, alongside other defense materiel. The first shipments of US military support have already arrived in Israel and more is on the way.”

Blinken did not personally address the images of dead children during his joint press conference with Netanyahu. The prime minister’s office posted the graphic images to X, formerly Twitter, with the admonition: “These are horrifying photos of babies murdered and burned by the Hamas monsters. Hamas is inhuman. Hamas is ISIS.”

President Biden stirred confusion Wednesday by telling Jewish leaders that he had seen “confirmed pictures of terrorists beheading children.”

The White House backtracked late Wednesday and said Biden had not seen any such photos. At least two eyewitnesses in Israel said in press reports that they had seen decapitated children among the dead, but precise details including the number of victims remains unclear.

Netanyahu called Thursday for stronger international condemnation of Hamas in response to the slaughter of Israel’s citizens.

“Hamas is ISIS and just as ISIS was crushed, so too will Hamas be crushed. And Hamas to be treated exactly the way ISIS was treated,” Netanyahu said.

“They should be spit out from the community of nations. No leader should meet them, no country should harbor them, and those that do should be sanctioned.”