A cease-fire brokered by the United Nations took hold in Yemen on Wednesday night. The U.N. hopes the break will allow humanitarian workers to deliver badly needed aid and pave the way for peace talks.

U.N. Special Envoy for Yemen Ismail Ould Cheikh Ahmed announced the deal on Monday. A statement from the U.N. said Ahmed "has received assurances from all Yemeni parties" that they will abide by the Cessation of Hostilities that he negotiated in April.

The pause in hostilities went into effect just before midnight local time — Yemen is seven hours ahead of the U.S. East Coast. It's set to last "an initial period of 72 hours" and can be renewed.

We'll be following whether the parties to the fighting comply with the cease-fire. It's worth noting that previous truces have collapsed — in some cases mere minutes after going into effect.

In Yemen's war, Shiite Houthi rebels are fighting troops loyal to the internationally recognized president, Abed Rabo Mansour Hadi. And Hadi's allies in a Saudi-led coalition have been carrying out airstrikes across the country since March 2015.

The U.S. provides support to that Saudi-led coalition, including intelligence and midair refueling. But last week, U.S. officials said they were reviewing that support after a coalition airstrike hit a funeral gathering in the capital, Sanaa, killing at least 140 people.

The Saudi-led coalition is routinely criticized by human rights groups for killing civilians in strikes against hospitals, schools and crowded market areas. The Houthi rebels are also known to indiscriminately launch rockets into civilian neighborhoods. The U.N. estimates that some 4,000 civilians have been killed since the war escalated in March 2015 — the majority of those by Saudi-led airstrikes.

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