FNA- Dozens of mercenaries were killed and injured as Yemeni army and popular forces launched a wide-scale operation against Saudi-led posts in Marib�s Serwah.

The Arabic-language al-Masirah television network quoted a military source as saying that the allied forces carried out a massive offensive against Saudi-led posts.

Dozens of mercenaries were killed and injured in the offensive.

The Saudi air force failed to help its mercenaries and to hinder the advance of the Yemeni allied forces on battlefield, according to the military source.

Saudi Arabia has been striking Yemen since March 2015 to restore power to fugitive president Mansour Hadi, a close ally of Riyadh. The Saudi-led aggression has so far killed at least 14,300 Yemenis, including hundreds of women and children.

Despite Riyadh's claims that it is bombing the positions of the Ansarullah fighters, Saudi bombers are flattening residential areas and civilian infrastructures.

According to several reports, the Saudi-led air campaign against Yemen has drove the impoverished country towards humanitarian disaster, as Saudi Arabia's deadly campaign prevented the patients from travelling abroad for treatment and blocked the entry of medicine into the war-torn country.

The cholera outbreak in Yemen which began in April, has also claimed 2,000 lives and has infected 500,000, as the nation has been suffering from what the World Health Organization (WHO) describes as the �largest epidemic in the world� amid a non-stop bombing campaign led by Saudi Arabia. Also Riyadh's deadly campaign prevented the patients from traveling abroad for treatment and blocked the entry of medicine into the war-torn country.

According to reports, the cholera epidemic in Yemen, which is the subject of a Saudi Arabian war and total embargo, is the largest recorded in modern history.