Noah Rothman provides a worthwhile reminder of why a nuclear Iran is a threat not just to Israel, but to the United States:

For one, Iran is the foremost state sponsor of terrorism on earth. It exports terrorists and arms throughout the region and beyond, and there are no guarantees that it won’t play a similarly reckless game with nuclear material. At minimum, the terrorist elements in Iran’s orbit would be emboldened by Iran’s new nuclear might. Their numbers would surely grow, as would their willingness to court risk.

Iran maintains the largest arsenal of ballistic missiles in the region. It can certainly deliver a warhead to targets inside the Middle East, and it’s fast-tracking the development of space-launch vehicles that can threaten the U.S. mainland. Even if Tehran were a rational actor that could be reliably deterred, an acknowledged Iranian bomb would kick-start a race toward nuclear proliferation in the region. The Saudis, the Turks, the Egyptians, and others would probably be compelled to seek their own nuclear deterrents, leading to an infinitely more complex security environment.

In the meantime, Iran would be able to blackmail the West, allowing it occasionally to choke off the trade and energy exports that transit the Persian Gulf and to engage in far more reckless acts of international terrorism.

As for the possible consequences, Rothman observes:

Iranian retaliation might be measured with the understanding that if it’s not properly calibrated, the U.S. and Israel could begin taking out Iranian command-and-control targets next. If the symbols of the regime begin crumbling, the oppressed Iranian people might find the courage to finish the job. If there’s anything the mullahs fear more than the U.S. military, it’s their own citizens.

Considering the current state of Israel-Arab relations, Ghaith al-Omari writes

First and foremost, no ceasefire will be possible without the release of Israeli hostages and commitments to disarm Hamas and remove it from power. The final say on these matters rests with Hamas commanders on the ground in Gaza, who have been largely impervious to foreign pressure so far. At minimum, however, the United States should insist that Qatari and Egyptian mediators push Hamas’s external leadership to accept these conditions publicly, which could increase pressure on the group’s Gaza leadership.

Washington should also demand a clear, public position from key Arab states regarding disarmament. The Palestinian Authority President Mahmoud Abbas endorsed this position in a June letter to Saudi Arabia and France, giving Arab states Palestinian cover for endorsing it themselves.

Some Arab states have already indicated a willingness to play a significant role, but they will have little incentive to commit resources and personnel to Gaza unless Israel (1) provides guarantees that it will not occupy the Strip indefinitely, and (2) removes its veto on a PA role in Gaza’s future, even if only symbolic at first. Arab officials are also seeking assurances that any role they play in Gaza will be in the context of a wider effort to reach a two-state solution.

On the other hand, Washington must remain mindful that current conditions between Israel and the Palestinians are not remotely conducive to . . . implementing a two-state solution.