China and Pakistan stage joint air exercise

The Chinese and Pakistani air forces began joint military training in China on Sunday, a People's Liberation Army Air Force spokesman said.

The drill, code-named "Shaheen-IV" - which means "eagle" in Urdu - is the fourth of its kind between the two neighbors. The location was not disclosed.

It comes at a time when both countries have pledged to toughen their fight against threats including terrorism, separatism and extremism.