Add one more voice of reason to the long list urging Joe Biden to rethink his plan to re-enter the Iran nuclear deal: Henry Kissinger warns that it could kick off a disastrous nuclear arms race in the Middle East.

At a conference for the Jewish People Policy Institute on Monday, Kissinger argued that Biden should by no means reverse President Trump’s decision to pull the United States out of the accord.

Biden has said he means to return to it as long as Iran agrees to comply with the restrictions on its actions. But Kissinger notes that the deal’s time limits on key restrictions and “so many escape clauses” render it effectively useless in stopping Iran’s nuclear development.

Plus, the accord leaves Iran’s enrichment capabilities intact while weakening or waiving US economic sanctions — at a time when the ones Trump imposed are hitting the regime hard.

Iran’s neighbors know all this, and have no intention of being helpless against Tehran’s nuclear weapons. If Biden sticks with his plans, everyone else in the region will rush to get their own nukes.

Biden needs to admit that his preferred course no longer makes sense.