A "shadowy new group" named HAYI, possibly tied to Iran, claimed responsibility for London stabbings. AP Pollsters: Short-Term Costs Just Part of Story The Iran war is proving a “domestic liability” for the GOP, note Douglas E. Schoen and Carly Cooperman at The Hill — partly because “for many Americans, the war has not been clearly or consistently explained, leaving voters to judge it primarily through its economic consequences.” Yet its “long-term strategic impact” may well “improve sentiment in the long term.” Iran’s power has been devastated and its neighbors alienated. “If the war ultimately results in an Iranian regime that is permanently weakened, especially one incapable of developing nuclear weapons, and strengthens alignment among U.S.…