Since the North Koreans shelled a South Korean island last month and renewed fears of war on the Korean peninsula, all eyes have focused on Beijing.
China is the North's only ally and its main supplier of food and fuel. So the world was watching to see whether Beijing would promote stability in the region by restraining Pyongyang.
Instead China chose to play Russian - excuse me - Chinese roulette.
Chinese leaders refused last week to criticize their North Korean neighbor, gambling that it won't provoke more bloodshed. That's a gamble with bad odds.
The Hermit Kingdom is going through a leadership transition, from dying dictator Kim Jong Il to his 26-year-old son, Kim Jong Un. Korea analysts contend Pyongyang is behaving even more aggressively than usual so as to bolster young Kim's standing.
The Chinese fear a North Korean collapse would destabilize their border - and destroy a state that buffers it from U.S. military forces in South Korea.
"China probably thinks North Korea won't cross any red lines and things won't blow up," says the University of Pennsylvania's Jacques deLisle, a China expert. "They think North Korea will muddle through, and eventually follow the Chinese route to economic reform."
But what if the Chinese are wrong?
North Korea has repeatedly rejected market reforms, and it remains an economic basket case. In 2009, Pyongyang quit six-party talks that offered U.S. recognition and substantial aid if it would give up its nuclear program. Before quitting the talks, the North Koreans incurred U.N. condemnation by testing a missile; they conducted a nuclear test soon afterward.
Recently, North Korea revealed it has a fully developed program to produce highly enriched uranium for weapons, in addition to its plutonium program. Most experts say they believe it no longer wants to give up its nukes but is angling to be recognized as a full nuclear power.
Yet China does little to rein in its ally. When North Korean torpedoes sank a South Korean naval vessel in March, killing 46 crewmen, Beijing refused even to acknowledge that the North was to blame.
After the latest North Korean attack on the South Korean island, Chinese officials stayed "neutral" and blocked the U.N. Security Council from condemning Pyongyang. Only when the Obama administration sent an aircraft carrier to the Yellow Sea to support South Korea did Beijing make an inadequate gesture, suggesting a return to a new version of the failed six-party talks.
Joint Chiefs Chairman Adm. Mike Mullen rightly responded last week: "Beijing's call for consultations will not substitute for action."
Of course, Chinese officials talk a good game about wanting a peaceful Korean peninsula and ending North Korea's nuclear program. But they did little to make the six-party talks successful.
China appears to have turned a blind eye to North Korean efforts to export its weapons technology for hard currency: Another WikiLeaks cable indicates Beijing may have allowed North Korean sales of long-range missiles or missile parts to transit to Iran via Beijing airport. Indeed, the North Korea crisis will test whether China has any desire to play a constructive leadership role in Asia.
China's coddling of Pyongyang has further alarmed the public in Japan and South Korea. Beijing is driving Asian nations to tighten their security ties with Washington.
A visionary China would work with Japan, South Korea, and the United States to facilitate a peaceful Korean transition, one that wouldn't threaten Chinese interests. Otherwise, Chinese officials may be blindsided by a war provoked by North Korea, or by its sudden collapse.
A farsighted Beijing would cease playing Chinese roulette and be proactive on North Korea. This would entail risk, but the odds are far more favorable for China than the shortsighted game it is playing, which leaves the gun in Pyongyang's hands.
Trudy Rubin is a columnist and editorial-board member for the Philadelphia Inquirer. Readers may write to her at: Philadelphia Inquirer, P.O. Box 8263, Philadelphia, Pa. 19101, or by e-mail at trubinphillynews.com.