Hadi is hiding in another country, Nasrallah and Al-Maliki (and Bashar Al-Assad as well) are in their own homeland fighting external enemies.Although Iran/Hizbo managed to smuggle some equipment to the Houhties on top of what they have been given by Ali Salah yet they are losing to the legitimate government. The Houthis are a replica of Hizbollah and the Iranian regime. for 40 years now Hassan Nasrullah shouting from his tunnel. not even able to walk down the street of where he lives.
The KSA-backed Hadi regime has already been eliminated by the STC. 4 years after Saudi invasion of Yemen, Houthis still control Sana'a and now KSA-backed Hadi regime even lost Aden. I think KSA-backed Hadi will be staying safe underground in KSA for a long time yet.