More than 100 US military advisers are on the ground in Saudi Arabia providing intelligence and targeting support to the Kingdom in its military campaign against the Iran-backed Houthis in Yemen, multiple sources familiar with the effort say. The assistance comes as fighting on the peninsula intensifies and risks spilling into open war with the Houthis, threatening a second major shipping corridor out of the Middle East.

Yemen's Tehran-backed Houthis attacked energy facilities and cities in US ally Saudi Arabia on Tuesday, wounding more than 70 people and underscoring the risk of the Iran…

Cooperation between the two groups grew during the war in Gaza and now they are “squeezing Saudi like with pliers,” a senior analyst said.