With North Korea’s launch of an intercontinental ballistic missile, it has become more imperative for the international community to strengthen pressure on the country.
China has always advocated compliance with UN resolutions on strict sanctions against North Korea, but Sino-Korean trade is still flourishing. Clearly China is not strictly enforcing the sanctions. China claims to be a "responsible major power," thus it should not enable North Korea's militarism. The US, Japan and South Korea should back Taiwan to lead China to democratization, which would then put pressure on North Korea to follow suit. For details, see the Charter for Permanent Peace and Development.