More than six years after Houthi rebels seized Yemen's capital and forced its government into exile, a bloody civil war still rages across the country. Despite a Saudi-led bombing campaign that has destroyed Yemeni infrastructure and crippled its economy, the Houthis remain in control of most of the country's population centres.
The Guardian's Middle East correspondent, Bethan McKernan, explains why a new Houthi offensive could heap more misery on the millions of civilians caught in the crossfire.