The country is not asking for U.N. intervention, said Information Minister Kheu Kanharith.

CNN: Cambodia reports Thai incursions to U.N.

More recently, we played a key role in supporting the U.N. intervention - again, Blue Helmets in the Congo - and we paid 25 percent of the bill.

NPR: U.S. Non-Intervention In Syria Could Mirror Outcome In Congo

The possible deployment of an intervention brigade of U.N. troops has been mentioned as a way of stabilizing the nation's restive eastern region.

CNN: African leaders sign Congo peace deal

Russia and China both also likely fear the U.N. vote could set a precedent for U.N. and international intervention in their own internal disputes.

WSJ: U.N. Vetoes to Inflame Syrian Conflict

"The alternative to a U.N. force is a European intervention, " the official said.

CENTERFORSECURITYPOLICY: Center For Security Policy

The U.N. has the power to authorise military intervention once all other options have been exhausted and the peace and stability of a region is in jeopardy.

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