Saudi Yemen battle has taken a strange form. The alliance of Arabs has almost broken practically and there are tensions between Saudi and Emirates also now. The most active force now in this battle is the rented army of Sudan which is not an experienced army.
But since they are under heavy influence of Saudi, they have been got down to fight against Yemen, but these Sudanese big brigades also run away from few Yemeni combatants.
The Yemenis have got drones which are attacking on daily basis certain bases of Saudi like Airport and oil refineries, depots.
The defensive system which Saudi had for protecting from attacks is not working and there is some flaw in that and it fails. Many Saudi airports have come under the range of Yemeni drones.