China threatens to attack Burma over border incident

Reuters:

China's military will take "decisive" measures if there is a repeat attack by Myanmar forces on its territory, a senior military officer said after a bomb from a Myanmar aircraft killed four people.

Myanmar government forces have been battling rebels on the border with China since last month and China has urged Myanmar to "lower the temperature".

But Myanmar denied that any bomb from its forces had fallen in China and said the rebels might have fired into China to create "misunderstanding". The rebels do not have aircraft.

China's air force has dispatched planes to patrol the border and step up protection of its airspace. Beijing has also summoned Myanmar's ambassador to complain about the bombing.

Fan Changlong, who is a deputy head of the powerful Central Military Commission, said Myanmar air force aircraft had crossed the border "many times" recently, China's defense ministry said in a statement late on Saturday.

"The Myanmar side must recognize the seriousness of the issue, seriously deal with this incident, punish those who caused the trouble, apologize and pay compensation to family members, and explain themselves to China," Fan was cited as telling Myanmar's military in an emergency telephone call.
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Tens of thousands of people, many of them ethnic Chinese, have fled the fighting in northeastern Myanmar's Kokang region into China.

Myanmar has said Chinese mercenaries were fighting with the rebels, and it has urged China to cooperate to prevent "terrorist attacks" being launched from Chinese territory.

China has denied that any attacks into Myanmar have been launched from its territory.

The rebels are from a group called the Myanmar National Democratic Alliance Army (MNDAA), which is led by ethnic Chinese commander Peng Jiasheng.
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It is not clear how China knows that Myanmar bombed their territory, but also somehow knows that Myanmar was not attacked from Chinese territory.  How would they know that?  I realize that China is ruled by a totalitarian regime, but is it really monitoring attacks in a border country?  

The rulers of the country formerly known as Burma have been dealing with internal ethnic issues with not only Chinese nationals but also attacks on its mUslim population.  It is primarily a Buddist country.