Yemen Slides Back into War as Houthi Forces Launch Attacks on Saudi Oil Facilities

The conflict in Yemen is escalating as Iranian-backed Houthi forces launch ground attacks against government troops and fire missiles at Saudi oil facilities.

Riyadh has responded with airstrikes inside Yemen, raising concerns of a wider war involving other regional powers like Pakistan.

Helen Lackner, author of 'Yemen in Crisis: Road to War', warns that the fighting will be intense and long-lasting.