Delegations from Yemen's warring sides discussed expanding a shaky truce in the key port city of Hodeida on Monday, however neither side appeared ready to agree on initial draft proposals hoped for by the United Nations, who are sponsoring talks in Sweden and seek to resume needed aid deliveries by sea.

One draft document obtained by The Associated Press showed an initial 16-point proposal to stop all fighting and have all troops withdraw to the city limits and later outside the province while allowing U.N. oversight and setting up a local, pre-war administration. Representatives from both sides mentioned only preliminary proposals that were not accepted.

The talks, held in a castle outside Stockholm, have so far focused on implementing a broad prisoner swap between representatives from Yemen's Iran-backed Houthi rebels and the internationally recognized government supported by the U.S. and a Saudi-led coalition. They met for a fifth day Monday.

"As always, in any round of talks, ideas are brought forward, and they could be preliminary, they could have just been thrown out on the table," said Ali Hussein Ashal from the government delegation. "And a lot of the ideas which have been brought forward previously, in other rounds of talks, the Houthis have refused many of them."

Earlier rebel delegation member Gamal Amer said that his side had rejected a proposal, although it was unclear if it was the same one or if multiple drafts existed. He says only that the rebels had submitted "substantive observations" about it. Also Monday, a similar draft document circulated outlining a gradual drawdown of the conflict in the central city of Taiz.

United Nations special envoy Martin Griffiths has said he wants to "take Hodeida out of the war," in hopes that international aid delivers can be restored through the port and the country can avert famine.

The war has killed tens of thousands and made Yemen the world's worst humanitarian crisis with 22 of its 29 million people in need of aid, according to the U.N. The two sides have for months been locked in a stalemated fight over Hodeida.