The international coalition Saudi Arabia leads against Shiite rebels in Yemen has officially ended a truce, the Saudi state-run news agency reported.
The truce technically came into effect on December 15, 2015 as a mutual show of good faith during peace negotiations taking place in Switzerland.
But the truce never truly took hold on the ground in Yemen, with both sides ignoring it.
The United Nations said on December 20 there were "numerous violations" of the cease-fire agreement from the very start.
Yemen's conflict pits the internationally recognised government backed by a Saudi-led, US-supported coalition against the rebels, known as Houthis, who are allied with a former president.
Local affiliates of al-Qaida and the so-called 'Islamic State' group have exploited Yemen's chaos to grab land and exercise influence.