Sh1n reposted an OSINT assessment from @BenTzionMacales claiming that Saudi forces are concentrating attacks on high-value underground Houthi targets in northern Yemen.

According to the post, the Houthis developed large missile tunnels around Sa'ada, Amran, and Sanaa with Iranian support to protect strategic weapons stockpiles. It said the United States struck these sites during an American operation in March 2025, targeting facility entrances and causing collapses. The author characterized those attacks as practice for striking underground infrastructure ahead of the campaign against Iran.

The assessment said the Houthis subsequently rehabilitated and expanded the facilities to conceal their ballistic missile inventory. It claimed that after facing ballistic missile fire in recent weeks, Saudi forces activated their target bank and again moved to collapse the tunnel entrances, preventing access to the stockpiles during the campaign.

The author identified strikes at eight sites in northern Yemen and said imagery presented in the original thread documented the attacks, with earth discoloration highlighted as an indicator.