Thailand has launched airstrikes against Cambodian military targets along their disputed border, in an escalation of their deadly border dispute. Follow for live updates

Britain's foreign ministry on Thursday has advised against all but essential travel to parts of Cambodia and Thailand following the worst fighting between the countries in 13 years.

Cambodia has yet to release any casualty figures. Cambodian Prime Minister Hun Manet has appealed to the United Nations Security Council to hold an emergency meeting on the issue as Malaysian Prime Minister Anwar Ibrahim, the current ASEAN chair, tries to broker a cessation of hostilities.

A Thai fighter jet dropped bombs on Cambodian military targets along their disputed border on Thursday, as armed clashes between the two Southeast Asian neighbors killed at least 11 civilians, in a dramatic escalation of tensions that threatens to erupt into a broader conflict.

Tensions have bubbled between the two neighbors for months, flaring on Thursday as Cambodia and Thailand exchanged fire.

The FCDO travel advice for Thailand says the same about the border crossing, but adds: “Take extra care and stay alert in border areas and follow the instructions of local authorities, especially at tourist destinations such as the Preah Vihear temple, the Ta Kwai temple and the Ta Muen Thom temple.

In a landmark advisory opinion issued on Wednesday, the world’s highest court said polluting countries may be in breach of international law if they do not protect the planet from the “existential threat” posed by climate change. It was the first time the International Court of Justice had formally addressed the climate crisis.

Thailand has closed four border checkpoints with Cambodia and expelled Phnom Penh’s ambassador following a landmine explosion that severely injured a Thai soldier, deepening a growing crisis between the two neighbors.