On Monday, Thailand started to control its land borders. They stopped tourists from going to Cambodia. This happened because Thailand and Cambodia are arguing about their border, and they are doing things to get back at each other.

After a fight on May 28, the two countries' relationship got worse. A Cambodian soldier died in this fight over a small area. They said they would stop fighting, but they are still doing things that cause problems.

On Monday, the Prime Minister said Thailand will check people more carefully at its borders. Tourists will not be able to leave. Only students, people who need medical help, and those buying important things can enter or leave Thailand.

She said they wanted to stop people from going to the casinos in Cambodia. But it seemed that all visitors would be stopped.

The Thai army said on Monday that they have started new rules at all border crossings with Cambodia in five areas. Only people who need to cross the border for important reasons can do so.

Cambodia had a problem with the border. Because of this, they stopped using some Thai internet services. They also stopped buying electricity and fuel from Thailand. Before this, Cambodia bought 30% of its petrol and fuel from Thailand.

Paetongtarn said on Monday that Thailand will consider stopping exports that help scam groups in Cambodia. They will also work with other countries and international groups to stop online crime in Southeast Asia.

Earlier this year, Thailand worked to stop online scams in Myanmar. They stopped electricity, internet, and gas in towns near the border where these scams were.

A U.N. report in April said that Cambodia is a center for scam operations. In these scams, workers use the internet to trick people with fake love stories, false investment ideas, and illegal gambling games.

Some people have criticized Paetongtarn because they think she is too kind to Cambodia. These people are usually right-wing nationalists, and they have always been against her father, Thaksin Shinawatra, who was a former Prime Minister.

Last week, a phone call between Paetongtarn and Hun Sen made many people angry. Hun Sen was the leader of Cambodia for a long time. Because of the call, people said Paetongtarn should leave her job.

Some people said she tried to please Hun Sen, who was her father's friend. They thought she made Thailand look weak because she called a Thai army leader at the border her "opponent." Some groups will protest this week and ask Paetongtarn to leave her job.