The growing trade war between China and the United States shows little signs of easing after igniting massive tit-for-tat tariffs between the world’s two biggest economies. Here’s a handy recap of the dizzying back-and-forth between the two countries.

On Tuesday, President Donald Trump bragged that many foreign leaders were “kissing his ass” to avoid the steep tariffs he’d imposed on their countries. But China’s leader, Xi Jinping, was not one of them. “We are waiting for their call,” Trump said of China’s leadership in a social-media post.

Xi Jinping, who rules with absolute authority, has shown he is willing to let the Chinese people endure hardship. President Trump revealed he has limits.