A two-month cease-fire in Yemen faces major hurdles to creating lasting peace, suggesting more fighting in the future, and a low but greater impact risk of escalation beyond Yemen that could widen attacks against Saudi Arabia and the United Arab Emirates. On April 2, the United Nations announced that the warring sides in Yemen had agreed to a two-month cease-fire, with agreements to trade prisoners, reopen the Sanaa airport, and allow ships to supply fuel to Houthi-held Hoediah. Yet despite the truce, violations, especially around the key city of Marib, have already been reported. And unless the Houthis abandon their offensive or the Saudi-led coalition loses the city, it appears this truce will not hold permanently. Instead, the cease-fire is more likely to presage another round of fighting, which will include the potential escalation of the conflict beyond Yemen, as the Houthis may attempt to build leverage over the Saudis...