The Los Angeles Times reports: From their post on a rocky hilltop, a pair of Saudi border guards man a .50-caliber machine gun and use binoculars to scan the dry scrubland that separates this kingdom from its war-torn neighbor to the south, Yemen.

The scene before them appeared peaceful Friday: The craggy peaks that rise beyond a riverbed were spotted with goats, cows and families of baboons. But later that day, mortar rounds fired into Saudi territory from Yemen killed three soldiers and injured two others stationed along the frontier, state media reported Saturday.

It was the latest in a series of border skirmishes that have killed six of the kingdom’s troops since a Saudi-led coalition began airstrikes March 25 against rebels known as Houthis, who have seized large parts of Yemen. The Saudi Defense Ministry said that its forces returned fire, and that 500 Houthi fighters have been killed in the clashes. [Continue reading…]