Yemen, which ousted a president in the 2011 Arab Spring, is in chaos again after its government resigned on Thursday. President Abed Rabbo Hadi stepped down two days after Houthi rebels fought their way into his palace.
The collapse surprised American officials and raises concerns that Yemen will become even more of a breeding ground for al-Qaida in the Arabian Peninsula.
Here & Now's Jeremy Hobson spoke with Fawaz Gerges, a professor at the London School of Economics, who says the Arab Spring started out as a revolutionary moment in the Middle East, but the regional power struggle between Saudi Arabia and Iran has complicated the internal struggles in countries such as Yemen and Syria.
This segment aired on January 23, 2015.