Long-simmering tensions between Thailand and Cambodia escalated to deadly violence on July 24, setting off five days of military clashes at multiple spots along the roughly 800-kilometer (500 mile) border.

The fighting between Thailand and Cambodia exposes the depth of global arms proliferation in South-East Asia, proving more sophisticated and deadly than experts expected.

The fragile ceasefire between Thailand and Cambodia is hanging by a thread. Despite a Malaysia-brokered deal backed by the U.S. and China, tensions remain high. Thailand is holding nearly 20 Cambodian soldiers it claims were captured during a failed assault,