Yemen's warring parties have failed to pull troops from the country's main port under a month-old UN-sponsored truce, reviving the threat of an all-out assault on Hudaida that risks cutting supply lines and unleashing famine.

A view of cranes at the container terminal at the Red Sea port of Hodeidah, Yemen January 5, 2019.
A view of cranes at the container terminal at the Red Sea port of Hodeidah, Yemen January 5, 2019. (Reuters Archive)

The Saudi-led coalition is prepared to use "calibrated force" to push the Iranian-aligned Houthi movement to withdraw from Yemen's Hudaida port city under a UN-sponsored deal, a senior United Arab Emirates official said on Wednesday.

Yemen's warring parties have failed to pull troops from the country's main port under a month-old truce, reviving the threat of an all-out assault on Hudaida that risks cutting supply lines and unleashing famine.

The Houthis control Hudaida while other Yemeni factions backed by the coalition trying to restore the internationally recognised government are massed on its outskirts.

Minister of State for Foreign Affairs Anwar Gargash said the Western-backed Sunni Muslim Arab coalition struck 10 Houthi training camps outside Hudaida governorate on Wednesday.

"Coalition prepared to use more calibrated force to prod Houthi compliance with Stockholm Agreement," he tweeted.

"To preserve ceasefire & any hope for political process, UN and international community must press Houthis to stop violations, facilitate aid convoys, and move forward on withdrawal from Hodaida city & ports as agreed," he added.

UN envoy Martin Griffiths has been shuttling between the parties to rescue the deal, the first major diplomatic breakthrough of the nearly four-year-old war that has killed tens of thousands of people and pushed Yemen to the verge of starvation.

The ceasefire in Hodeidah, the entry point for the bulk of Yemen's commercial imports and aid, has largely held although sporadic skirmishes continued in flashpoints in the city. In other areas of the poorest Arabian Peninsula nation, including the Houthi-held capital Sanaa, fighting has escalated.

The warring parties disagree over who would control Hodeidah under the deal reached at December peace talks in Sweden between the Houthis and the government of Abd-Rabbu Mansour Hadi, which was ousted from power in Sanaa in late 2014.

"Dangerous escalation"

Both sides have accused one another of violating the pact. A coalition source said in a statement sent to Reuters that Wednesday's strikes were "legal" as the ceasefire only applied to Hodeidah governorate.

Houthi-run al Masirah TV said the strikes were a breach since they hit the outskirts of the city, including the July 7 eastern district.

"The United Nations' silence encouraged the most dangerous escalation in air strikes by the enemy since the Stockholm agreement despite our clear compliance," it quoted Salim al Mugalis, part of the Houthi negotiating team, as saying.

The Saudi-led coalition intervened in Yemen in March 2015, when President Abd Rabbu Mansour Hadi fled into exile as rebels closed in on his last stronghold.

Since then the conflict has deteriorated to what the UN describes as the world's worst humanitarian crisis, with millions of people in need of aid or at the brink of starvation.

The war has been stalemated for years, with the alliance that intervened in 2015 unable to dislodge the Houthis, who control most urban centres. Hadi's government controls the southern port city of Aden and a string of coastal towns.

Coalition forces led by the United Arab Emirates have twice attempted to capture Hudaidah port since last year to weaken the Houthis, but had held off from a full-blown assault amid global concern over the world's most urgent humanitarian crisis.

The war and the ensuing economic collapse has left 15.9 million people facing severe hunger.

Western nations, some of which supply the coalition with arms and intelligence, are pressing for an end to the conflict which is widely seen in the region as a proxy war between Saudi Arabia and Iran.

The Houthis deny receiving help from Iran and say their revolution is against corruption.

Source: Reuters