The Saudi-led coalition launched air strikes Sunday on Yemen. The raids targeted Sanaa, the rebel-held capital, according to Saudi Arabia’s Al Ekhbariya TV, which tweeted “the start of air strikes on Huthi camps and strongholds in Sanaa” around midnight. The attacks began shortly after the Huthis announced a three-day truce and offered peace talks on condition that the Saudis stop their air strikes and blockade of Yemen and remove “foreign forces”. Just a day earlier, the rebels had fired drones and missiles at 16 targets in Saudi Arabia, turning an oil plant near Jeddah’s Formula One track into a raging inferno as aghast drivers looked on. The flurry of attacks and diplomacy came as Yemen, the Arab world’s poorest country, on Saturday marked seven years since the Saudi-led intervention against the Huthis, who seized Sanaa in 2014. The conflict has killed hundreds of thousands of people directly or indirectly and displaced millions, creating what the United Nations calls the world’s worst humanitarian crisis. UN Secretary-General Antonio Guterres on Saturday condemned the sudden rise in hostilities. “The Secretary-General strongly condemns the recent escalation of the conflict in Yemen,” the statement said, adding that Guterres is “deeply concerned” about reports of coalition attacks on the lifeline port of Hodeida.