What foreign policies were stupid in ancient times?

King Huai of Chu's betrayal of the alliance can be said to be a model of stupid foreign policy.

During the Spring and Autumn Period and the Warring States Period, the Chu State could be said to be very powerful. However, Chu State often made some wrong judgments in diplomacy. As a result, the Chu State had a good foundation, but in the end it was torn apart. Er Jing, King Chu Huai's betrayal of the alliance can be said to be a typical diplomatic mistake.

At that time, the Qin State wanted to lift a bronze tripod when the king of the Qin State formed an alliance with the Emperor of Zhou, and was hit on his toe. He died a few days later. This military man died in his prime. There was no successor, and the Qin Dynasty's government was in chaos. Many countries wanted to take advantage of this opportunity to make a fortune. Then the Qin Dynasty quickly decided to let King Qin Zhaoxiang succeed to the throne. After stabilizing the internal affairs, it began a series of divine diplomacy. operate.

First of all, Empress Dowager Xuan, who was born in the Chu State, wooed King Chu Huai. Empress Dowager Xuan was also very powerful at the time and was relatively powerful in the Qin State. When she went to woo King Chu Huai, King Chu Huai became There was some vacillation. Chu and Qi had been friends for generations. Chu was fierce and Qi was rich. The two complemented each other and were allies. King Chu Huai felt that Queen Mother Xuan would definitely serve Chu after she was born abroad. After thinking about it, his attitude seemed to be wavering. Later, of course, the State of Qin sent spies to sneak into the State of Chu, which strengthened King Chu Huai's belief in Qin State. Then King Chu Huai married his daughter to the King of Qin, which of course formed a The two kingdoms of Qin and Chu are great.

The State of Qi was very angry after knowing this. This was equivalent to the State of Chu betraying itself. Originally, the State of Qi was planning to unite the two countries to attack the newly rising State of Qin. After letting the State of Chu do this, the State of Qi He was so angry that he directly united the two countries and destroyed the Chu State first. It was not human inside and outside. King Chu Huai had no choice but to apologize. Later, King Qin invited King Chu Huai to an alliance meeting, and King Chu Huai went there without hesitation and was directly killed. The king of Qin detained him, and then he died of illness in Qin.