Mohammed Manea has tended honey bees northeast of Sanaa for years, but despairs that the production of "Yemen's gold" is under threat as the war engulfing the country drags on.

It is also a natural product that is traditionally recommended to new mothers to augment breast milk production.

Kabsh said that among the most significant problems he faced was travelling to find fresh flowers in bloom for his bees to harvest the nectar.

In Abs, another region in Hajjah province, beekeeper Ahmed Ali al-Adili said he had struggled to export honey to Gulf states including Saudi Arabia.

Around 3.3 million people have been displaced by the war and about 20 million people -- more than two-thirds of the population -- need humanitarian support to survive.

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