Understanding the Yemen-based militia now exerting control over international shipping in the Red Sea means understanding its roots, context, and regional alliances

Had the anti-Houthi units been working in coordination, their enemy would not have progressed so easily down Yemen's Red Sea coast, but infighting and a lack of leadership opened the door

The US views talks with the Houthis as a way to contain the scope of the conflict with Iran, while Tehran sees them as a means to translate military gains in the Red Sea into political gains

Just as Iran used Hezbollah to expand its influence in the Levant, it is now using the Houthis to give it leverage in Bab al-Mandab and the Red Sea amid its war with the US

Backed by the IRGC, the Houthis are intensifying pressure around southwestern Taiz, northern Lahj and Marib, while pro-government forces are largely on the defence

The presence of large armies and costly bases no longer guarantees control. The rules are now written by whoever has the will and the accessible means to enforce them

Some analysts say Houthi advances are only possible due to help from the IRGC, while others believe the group has evolved into a much more sophisticated and potent force

The Iran-backed group may appear to have the upper hand at the moment, but they are already struggling to hold their newly acquired territory

After rapid advances, the Yemeni rebel group is fortifying its positions along the vital maritime chokepoint, while intensifying pressure in southwestern Taiz, northern Lahj, and Marib