The designation has broad implications — not just for the Iran-backed group, which controls Yemen's capital, but also for international organizations trying to help residents badly in need of aid.
A doctor in Yemen says he was threatened at gunpoint when treating a patient infected with the virus. The incident is part of a larger trend of pandemic-related attacks worldwide.
With its health care system already in dire condition, conflict-ridden Yemen faces what Doctors Without Borders is calling a potential "catastrophe" as COVID-19 spreads.
The U.N. and The International Committee of the Red Cross applauded the effort and hope it will lead to further releases by Houthi rebels as well as by the Saudi-led coalition waging war in Yemen.
It's the largest one-day surge in crude prices in years. Yemen's Iranian-backed Houthi rebels claimed responsibility for the strikes, but the U.S. says Iran played a key role. Iran denies involvement.
Bipartisan lawmakers have criticized Saudi Arabia's actions in the Yemen conflict where thousands of civilians have died, and Saudi Arabia's role in the death of journalist Jamal Khashoggi.