Edition: Singapore Indonesia Asia US/UK BANGKOK: Thailand's army closed border crossings with Cambodia in six provinces on Monday (Jun 23) to all vehicles and foot passengers except students and people seeking medical treatment, as a territorial row between the neighbours rages . A long-running dispute over small stretches of the frontier erupted into military clashes last month in which a Cambodian soldier was killed. The latest border restrictions apply to foreigners as well as Thais, and