The youngest sister of Thailand’s King Maha Vajiralongkorn has expressed her wish for the military to construct a barrier along the Thai-Cambodian border after a territorial dispute between the two countries escalated into deadly clashes earlier this year.

"Please help consider how we can build a permanent wall between Cambodia and Thailand — not something temporary, but a long-lasting structure,” Princess Chulabhorn told army officials during a meeting in Bangkok this week. She also asked the military to build bunkers for local residents alongside ones for military personnel.

It’s a rare remark from the Thai royal family, whose members typically refrain from making political statements and underscores a souring relationship with neighboring Cambodia. In one opinion poll, more than half of respondents said Thailand shouldn’t be associated with Cambodia, while some 14% said Cambodia is an enemy of the country.

Thailand and Cambodia share a roughly 800-kilometer, dotted with disputed areas that have been simmering for decades. Tensions erupted into one of the worst armed confrontations between the two nations in July, killing dozens of people. A fragile ceasefire was reached after U.S. President Donald Trump threatened to block trade deals with the countries unless they stopped fighting.

The U.S. has been pushing for the Thai and Cambodian governments to sign an agreement when Trump attends the leaders’ summit of the Association of Southeast Asian Nations in Kuala Lumpur later this month.

During the royal meeting with army officials, the princess also offered funding from her Hathai Thip foundation for these border projects. Roughly translated as "divine heart," Hathai Thip was founded to support military activities at the border.

"We want to make it known to the public that we’re actively working,” the princess said.