Saudi Arabia acknowledges Houthis 'tried to target' civilian site at airfield in Najran, which also houses military base

Lebanon's Hezbollah and Islamic Jihad in Gaza have arsenals of rockets aimed into Israel, while tens of thousands of Shiite Muslim fighters across region are beholden to Tehran

Middle East's biggest petroleum exporter says blasts near oil tankers, pipeline aimed at global economy

Two pumping stations hit, bringing flow of crude to a halt; Iran-backed Houthi rebels claim responsibility for assaults

Houthi chief in rare interview says group prepared to continue four-year war, threatens missile strikes on Riyadh, Abu Dhabi, Dubai

International Crisis Group says Saudi Arabia doesn't know how to extract itself from war against Houthi rebels, needs US guidance