We are the Houthis and we're coming to town. With the spectacular attack on Abqaiq, Yemen's Houthis have overturned the geopolitical chessboard in Southwest Asia – going as far as introducing a whole new dimension: the distinct possibility of investing in a push to drive the House of Saud out of power.

Blowback is a bitch. Houthis – Zaidi Shiites from northern Yemen – and Wahhabis have been at each other's throats for ages. This book is absolutely essential to understand the mind-boggling complexity of Houthi tribes; as a bonus, it places the turmoil in southern Arabian lands way beyond a mere Iran-Saudi proxy war.

Still, it's always important to consider that Arab Shiites in the Eastern province – working in Saudi oil installations – have got to be natural allies of the Houthis fighting against Riyadh.

Houthi striking capability – from drone swarms to ballistic missile attacks – has been improving remarkably for the past year or so. It's not by accident that the UAE saw which way the geopolitical and geoeconomic winds were blowing: Abu Dhabi withdrew from Crown Prince Mohammad bin Salman's vicious war against Yemen and now is engaged in what it describes as a  "peace-first" strategy.