Summary

• Houthis enter the war: Houthis launch their first missile barrage on Israel since Operation Epic Fury. Red Sea shipping could once again be under direct threat.

• Serious US casualties in Saud base assault: Iran fired six ballistic missiles and 29 drones at Saudi Arabia’s Prince Sultan air base in a Friday attack that wounded at least 15 troops: AP. Late-night strike targeted Bushehr Nuclear Power Plant (for third time of war).

• Gulf states under sustained fire, casualties mount: Six wounded in missile strike on Abu Dhabi; Bahrain intercepts waves of missiles and drones near the United States Fifth Fleet base; Kuwait reports damage to Mubarak Al-Kabeer Port and Shuwaikh Port.

• US expending billions on Operation Epic Fury: "Battle damage and replacement of losses over the first three weeks of the war likely costs roughly $1.4 billion to $2.9 billion": WSJ. 

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Houthis Enter the War

The Houthis have finally entered the war, greatly raising the stakes on what's becoming a multi-front engagement, given Israel and Hezbollah have already been locked in a ground war in Lebanon. Overnight saw the Houthis send a barrage of missiles on Israel, which is the first such strike since the US began its Operation Epic Fury.

Military spokesman for the Houthis, Brigadier-General Yahya Saree, announced the attack on Saturday on the group's Al Masirah satellite television, Al Jazeera has confirmed. Strikes "will continue until the declared objectives are achieved... and until the aggression against all fronts of the resistance ceases," Saree said, confirming the Iran-aligned Yemeni group's entry into the war on Tehran's side.

The Israeli side confirmed the assault out of Yemen, saying that it intercepted one missile. This spells more bad news for global shipping through the other important regional energy and goods transit waterway, the Bab al-Mandab Strait in the Red Sea. It will also make it even harder for Washington to try and wind down the conflict amid efforts to find an acceptable offramp. Interestingly, the Houthis are justifying their actions not just based on the US-Israel attack on Iran, but on assaults on populations in the broader region:

The group said the attack with a barrage of missiles came after continued targeting of infrastructure in Iran, Lebanon, Iraq and the Palestinian territories, adding that their operations would continue until the "aggression" on all fronts ends.

Now Israelis will face aerial threats from Iranians, Hezbollah, Houthis, and Iraqi Shia paramilitaries...

At Least 15 Americans Wounded in Major Strikes on Saudi Base

The most significant overnight development saw major Iranian cross-Gulf attacks emerge. This is a serious escalation despite the White House having approached Tehran with a 15-point peace plan, delivered via Pakistan. The Iranians have clearly rejected it for now, and have instead launched a serious assault on Prince Sultan air base in Saudi Arabia Friday.

The Wall Street Journal details that "Twelve American troops–up from 10 previously reported–were wounded in an Iranian attack on the Prince Sultan air base in Saudi Arabia Friday, according to multiple U.S. and Arab officials."

The AP in follow up issued higher figures: "Iran fired six ballistic missiles and 29 drones at Saudi Arabia's Prince Sultan air base in a Friday attack that wounded at least 15 troops, including five seriously, according to the sources who were not authorized to comment publicly and spoke on the condition of anonymity. U.S. officials initially reported that at least 10 U.S. troops were injured, including two seriously wounded."

"The injured troops were inside a building on the base that was struck in the attack, the officials said," the report continues. "The attack also damaged multiple U.S. refueling aircraft. At least one missile struck the base, as well as several unmanned aerial vehicles, according to two of the officials." This marks the second significant strike on the same base. The aircraft hit was a KC-135 air refueling aircraft, which reportedly caught fire.

The mass casualty incident has raised ongoing questions of troop exposure and Pentagon preparedness for Iran's response:

Fresh Attacks on Abu Dhabi, Bahrain, Kuwait

Iran's missile war has continued expanding deeper into the Gulf, with the casualty count climbing in Abu Dhabi after an early Saturday strike. The Abu Dhabi Media Office confirms casualties (injuries, but no fatalities reported) have risen to six after a Saturday morning ballistic missile attack.

Elsewhere, in Bahrain, home to the United States Fifth Fleet, authorities reported air defenses have engaged almost nonstop over the past 24 hours, responding to 20 missiles and 23 drones.

Post raises question over future of Iran's nuclear program, with one Iranian proclaiming "The war will boost Iranian science and technology."

Kuwait has also taken fresh hits, with the ports of Mubarak Al-Kabeer Port and Shuwaikh Port sustaining damage amid combined drone and missile attacks, according to the Defense Ministry. Kuwaiti forces say they have also engaged four ballistic missiles, one cruise missile, and seven drones in the same window - in yet another sign the tempo is only accelerating.

Bushehr Nuclear Plant Hit for Third Time

Late-night strike targets Bushehr Nuclear Power Plant, marking the third hit in 10 days as pressure mounts on Iran’s nuclear infrastructure - and as especially Israel seeks to obliterate it as fast as possible. Iran's Atomic Energy Organization of Iran claims the attack caused no material damage, no casualties, as well as zero technical disruption at the facility.

And the International Atomic Energy Agency says it was notified by Tehran following the strike, underscoring continued monitoring even as attacks edge closer to sensitive nuclear sites. President Trump has meanwhile said that thousands of targets inside remain on the Pentagon's list.