U.S. President Donald Trump signed an executive order on Saturday to impose a 10 percent tariff on all Chinese imports under the pretext of fentanyl control efforts. China firmly opposes the new tariffs, which violate World Trade Organization (WTO) rules. It also calls on the U.S. to instead work on steady, sound and sustainable China-U.S. relations, the Chinese Ministry of Foreign Affairs spokesperson said. China also has taken countermeasures, such as filing a complaint with the WTO. So, what's the nature of the latest tariff disputes? How could major powers like China and the U.S. steer ties toward global economic stability?