President Biden has presided over disasters worldwide, from his bungled Afghanistan pullout to his invitation of Russian President Vladimir Putin’s invasion of Ukraine, that have exposed our citizens to a potential nuclear war.

His administration has not only projected weakness to the world but weakened America — at home and abroad — frittering away the commanding strategic position the Trump administration had bequeathed it and opening the door to aggression from our greatest foreign adversary of all, Communist China, that could well culminate in its long-desired invasion of Taiwan.

What distinguishes the massacre unfolding in Israel, in the rapes, murders and hostage-taking of its people by the Jew-hating, genocidal jihadist group Hamas, is the Biden administration’s unique culpability in the barbaric assault and in empowering the theocratic regime behind it.

That Israel, a state that’s suffered under the perpetual threat of annihilation, just experienced its darkest day in the last 50 years is the residue of Biden’s design — an extension of President Barack Obama’s design — on making Iran the “strong horse” in the Middle East.

The Biden administration has served as the aider, abettor and enabler of the world’s leading state sponsor of terror, Iran — both by backing the mullocracy in pursuit of an empty nuclear weapons deal and concurrently putting the screws to the Jewish state, Israel, that the Islamic supremacists seek to obliterate.

In so doing, the Biden team has proven the leading sponsor of the world’s leading state sponsor of terror, without which Hamas’ assault could never have occurred.

Consider how the Biden administration has strengthened Iran and its proxies while weakening Israel, thereby contributing to Hamas’ war on Israel:

• It has allowed tens of billions of dollars to flow into the coffers of the mullocracy via ransom payments. It also refuses to enforce sanctions on the oil sales that are its lifeblood — with China as one of Iran’s top buyers. This is on top of the tens of billions of dollars more that the Obama-Biden administration had released to the regime under the original Iran deal.

• It has further given hundreds of millions of dollars in US aid to the Palestinian Arabs, including funds specifically exempted from anti-terrorism laws earmarked for Hamas-controlled Gaza, from which the weekend’s attacks emerged. A consequence of Biden’s wholly botched Afghanistan pullout was that many weapons left behind reportedly ended up transported to Gaza as well.

• Equally if not more disturbing, it tabbed Robert Malley as its State Department envoy to Iran. Malley, whom the FBI is investigating for his alleged mishandling of classified information, led an apparent Iranian spy ring that includes the chief of staff for the assistant secretary of defense for special operations. Details of the seeming national-security-compromising betrayal curiously trickled out just days before Hamas carried out its Iran-sanctioned attack.

We have no idea the extent to which the Biden administration, filled with like-minded ideologues, has been infiltrated by other Iranian agents and their allies.

To what end? Is there any nexus to the ongoing attacks on Israel and those that could come elsewhere, including on our streets?

• And then there’s the unique hostility the Biden administration, like the Obama-Biden administration, has exhibited towards Israel. It goes way beyond merely snubbing Prime Minister Benjamin Netanyahu at the White House. The Biden team has sought to delegitimize, isolate and systematically erode Israel’s strategic position at every turn — most notably by seeking to foment unrest over its internal policies. This resulted in a near-civil war, leaving Israel weakened in advance of Hamas’ invasion.

Biden’s platitudes about support for Israel mean nothing when contrasted with these actions.

Israel’s enemies exploited them, initiating what is sure to be a grisly and grinding war that could easily expand into a regional if not global conflagration.

In this calamity, like none among those for which Biden bears culpability, the blood of Israelis and Americans slaughtered or being held hostage is on his hands.

Benjamin Weingarten is editor at large at RealClearInvestigations.