Yemen’s Houthi rebels have been transformed from a local armed group with limited capabilities to a powerful military organization with support from Iran, Iraqi armed groups, Lebanon’s Hezbollah militants and others, U.N. experts said in a new report.

The Iranian-backed Houthis have exploited the Israel-Hamas war in Gaza and worked to enhance their status in Iran’s self-described “Axis of Resistance” to gain popularity in the region and beyond