By the cutoff date in the prediction—January 20, 2025, when the next U.S. president was sworn in—there was no widely recognized regional war directly pitting Israel and Iran against each other in a sustained, large‑scale campaign.

What did exist before that date was:

• The Gaza war and parallel fronts with Hezbollah in Lebanon, Houthis in Yemen, and Iran‑aligned militias in Iraq and Syria, described collectively as a broader Middle Eastern crisis (2023–present), with multiple Iran‑backed groups attacking Israel and U.S. interests.(en.wikipedia.org)
• A series of direct but limited exchanges between Israel and Iran in 2024 (Iran’s April 13–14 drone/missile barrage and Israel’s limited April 19 strike; Iran’s large missile salvo on October 1; Israel’s October 26 strikes on Iranian targets). These are grouped in sources as the “2024 Iran–Israel conflict” and explicitly characterized as a prelude to a later Iran–Israel war, not that war itself.(en.wikipedia.org)
• Diplomatic statements in mid‑ to late‑2024 warning about the risk of a full‑scale regional war in the Middle East, which by implication had not yet occurred.(theguardian.com)
• On January 19, 2025, just before inauguration, a ceasefire and hostage‑prisoner exchange between Israel and Hamas went into effect in Gaza, marking a pause rather than an expansion into a new, broader war.(en.wikipedia.org)

The kind of large, overt regional war involving both Israel and Iran directly, with multi‑country spillover—what most observers would call a true regional war—began later, with the Iran–Israel war of 2025, which started on June 13, 2025 after a massive surprise Israeli attack on Iranian territory, followed by extensive Iranian missile strikes and wider regional involvement.(en.wikipedia.org) This is several months after the January 20, 2025 deadline in the prediction.

Because the predicted regional war did not materialize by the specified date (even though something very similar did happen later in 2025), the prediction must be scored as wrong on timing, and thus wrong overall under a strict “by this date” standard.