In three separate attacks by Iranian backed Houthis, two soldiers from the Royal Saudi Land Forces, one from the kingdom's Border Guards, and an officer from the UAE's forces, were killed on Wednesday, the Saudi official press agency reported.
The largely mountainous area along the border witnessed escalated Houthi violence in spite of three months of Saudi-led coalition air strikes on several parts of Yemen.
Saudi Arabia's coalition of Arab countries aims to force the Iranian backed Houthis and their ally, the former Yemeni president Ali Abdullah Saleh, to quit captured areas, put down their weapons and and let current President Abd Rabbu Mansour Hadi and his government to return from their self-imposed exile in Riyadh, in line with UN Security Council resolution 2216.
A Saudi-led coalition began on March 26 began an extensive air campaign targeting Houthi-held cities across Yemen. More than 2,600 civilians and rebels have been killed since the attacks began in March.
Neither side is willing to compromise causing the collapse of UN sponsored talks last week. The UN estimates show that around 20 million Yemenis are in need of aid.