The world's top oil exporter shares an 800km border with Iraq, where Islamic State insurgents and other Sunni Muslim militant groups seized towns and cities in a lightning advance last month.
King Abdullah has ordered all necessary measures to protect the kingdom against potential "terrorist threats", state news agency SPA reported on Thursday.
The Dubai-based Al Arabiya said on its website that Saudi troops fanned into the border region after Iraqi government forces abandoned positions, leaving the Saudi and Syrian frontiers unprotected.
An officer in the video aired by Al Arabiya said that the soldiers had been ordered to quit their posts without justification. The authenticity of the recording could not immediately be verified.-Arabian Business
Should we start worrying?