ADEN: Yemeni loyalists and Saudi-led coalition forces launched an offensive Monday to retake the key battleground province of Taez from Iran-backed rebels, as uncertainty surrounded the fate of UN-brokered peace talks.

At least 30 fighters were killed Monday, including 16 soldiers after their vehicle hit a land mine, military sources said.

Taez is seen as a gateway to the capital Sanaa, which has been held by the Shiite Houthi rebels since September last year. It is located at a crossroads between Sanaa, Yemen’s second city and main port of Aden and Mocha on the Red Sea coast.

Forces loyal to President Abed Rabbo Mansour Hadi have been pressing to recapture parts of Yemen seized by the Houthis and their allies, including forces loyal to deposed ex-president Ali Abdullah Saleh.

They have been backed by a Saudi-led coalition that launched airstrikes in March and began a major counter-offensive in July that has since reclaimed five southern provinces.

“The military operation to liberate Taez has begun after the arrival of military reinforcements from the Arab coalition, resistance forces and the national army in the south and west of Taez province,” Gen. Ahmed Al-Yafie, commander of the fourth military region, told AFP.

The region includes Taez as well as Aden in the south.

Clashes in Waziaa, southwest of Taez, left nine rebels and five loyalists dead, while pro-Hadi forces advanced backed by air strikes, military sources said.

The rebel-controlled Saba news agency said the insurgents repelled attempts to advance on four fronts toward Waziaa.

Military officials have said the coalition sent major reinforcements before they advanced toward Taez, Yemen’s third-biggest city.

Armored demining vehicles and other reinforcements arrived in the Shouraija region, between the loyalist-controlled Lahj province and Taez in the southwest, said the officials based in Aden.

Dozens of coalition armored vehicles were taking part in the three-pronged offensive, the sources said.

Arab coalition planes carried out several strikes against rebel positions and checkpoints in the regions of Rahida, south of Taez, and Mocha to facilitate the advance of the ground troops.

Sudanese forces from the strategic Al-Anad airbase in Lahj were taking part in the Taez operations, according to the sources.

A new round of UN-brokered peace talks aimed at ending the Yemeni conflict is expected to kick off in Geneva this month, but a date has yet to be set.

A source close to the UN’s special envoy to Yemen, Ismail Ould Cheikh Ahmed, said “some issues remain vague” regarding the fate of the talks.

“We are holding discussions with parties” involved in the conflict, the source told AFP.