A two-month, extendable truce in Yemen came into effect on Saturday evening, according to the United Nations Special Envoy to Yemen, Hans Grundberg.

A statement issued by the office of the UN envoy said, "The truce, which will last for two months, began at seven in the evening today. Starting from tonight, all offensive military operations by land, air and sea will stop."

The UN envoy stressed that "the success of this initiative depends on the warring parties' continued commitment to implementing the armistice agreement, including the accompanying humanitarian measures."

According to the statement, "the terms of the armistice agreement include facilitating the entry of 18 ships carrying fuel to the ports of Hodeidah, and allowing two flights to and from Sanaa airport every week."

Saudi Arabia is leading a military coalition in Yemen in support of the government of President Abd Rabbuh Mansour Hadi, which has been engaged in a bloody conflict against the Houthi rebels since mid-2014, in a war that killed and wounded hundreds of thousands and caused the worst humanitarian crisis in the world, according to the United Nations.

The announcement of the armistice comes after the efforts made by the UN envoy months ago.

Efforts have intensified in recent days. On Thursday, Grundberg met with representatives of the Houthi rebels in the Sultanate of Oman, in addition to a series of meetings he had with the internationally recognized Yemeni government in Riyadh.

The announcement coincided with discussions about the devastating conflict in Yemen hosted by Saudi Arabia, which leads a military coalition.