China has taken steps to stop the mutual cooperation that had been established with the United States in several key areas.

Foreign reports stated that China has abandoned cooperation between the two countries on climate change, war negotiations and efforts to combat international crimes.

 China made the move after US House Speaker Nancy Pelosi’s visit to Taiwan.

China’s Foreign Ministry announced yesterday that it has imposed tough sanctions on Nancy Pelosi and her family members.

It said that Nancy Pollosi’s visit to Taiwan is serious interference in China’s internal affairs.

 The Chinese Foreign Ministry further stated that the US envoy’s visit to Taiwan seriously undermines China’s sovereignty and territorial integrity.