mutual hostility

He used secret negotiations to restore ties between the United States and China, ending decades of isolation and mutual hostility.

He used secret channels to pursue ties between the United States and China, ending decades of isolation and mutual hostility.

Despite the mutual hostility, Mr. Lydon was intrigued.

“I believe we must end the vicious cycle of mutual hostility and work together to seek our two countries’ common interests.”

The U.S. and Russia are in a state of implacable mutual hostility.