Obama warns China over South China Sea ruling

US President Barack Obama warned Beijing Thursday it could not ignore a tribunal's ruling rejecting its sweeping claims to the South China Sea, driving tensions higher in a territorial row that threatens regional security. The dispute has raised fears of military confrontation between the world's superpowers, with China determined to cement control of the strategically vital waters despite a July verdict that its claims have no legal basis. "The landmark arbitration ruling in July, which is bind