“Yemen’s Houthi rebels claimed an attack Saturday on Saudi Arabia’s capital that apparently targeted jet-fuel storage at its airport, marking the first direct assault on Riyadh in months as the group squeezes the kingdom’s Red Sea route for its oil exports,” the Wall Street Journal reports.“Black smoke could be seen at King Khalid International Airport, in the latest escalation in the attacks targeting the kingdom.”“The strike hit jet-fuel facilities at the airfield, three officials with knowledge of the incident said.”