Thailand and Cambodia are fighting again, leaving a Trump-brokered peace agreement all but dead. What happened?

Armed clashes between Thailand and Cambodia entered a second day on Tuesday, both sides said, in defiance of calls from the United States to stop fighting and adhere to a months-old Trump-brokered peace deal that now looks on the brink of complete collapse.

​ Armed clashes between Thailand and Cambodia entered a second day on Tuesday, both sides said, in defiance of calls from the United States to stop fighting and adhere to a months-old Trump-brokered peace deal that now looks on the brink of complete collapse. Read More Breaking News, Latest News and Videos | CNN