At least five Saudi troops have been killed in a Yemeni retaliatory attack following the kingdom's airstrikes on its impoverished neighbor.

Four Saudi troops were hit by Yemeni snipers in Saudi Arabia's Alab border area, while another one was killed by Yemeni snipers at a military base in the 'Asir region.

Riyadh has been involved in more than two years of a devastating campaign against Yemen.

Meanwhile, at least two Yemeni civilians were killed after their car was targeted by Saudi jets in the western province of Ma’rib.

On Saturday, Yemeni army and allied forces launched a missile attack against a military base in Saudi Arabia’s southwestern Jizan region, inflicting casualties on Sudanese mercenaries there.

Yemen’s Arabic-language al-Masirah television network reported that a medium-range Qaher M-2 ballistic missile had precisely hit the al-Mosem base in Jizan on Saturday.

Since March 2015, Yemen has been crippled by a deadly Saudi-led war aimed at eliminating the Houthi Ansarullah movement and reinstalling a Riyadh-friendly former regime.

A Yemeni man stands on the debris of a house, hit in a Saudi air strike on a residential district, in the capital Sana’a on August 26, 2017. (Photo by AFP)

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Saudi Arabia has also achieved neither of the objectives despite spending billions of dollars on the war and enlisting the cooperation of dozens of its vassal states as well as Western countries.

Houthi and tribal fighters and allied army factions have been jointly fighting back the Saudi-led invaders.

The protracted war, which has been accompanied by a naval and aerial blockade on Yemen, has so far killed over 12,000 people and led to a humanitarian crisis in the impoverished state.