China is halting co-operation with the US in several key areas including climate change, military talks and efforts to combat international crime.

The new measures follow a trip to Taiwan by a US congressional delegation led by senior Democrat Nancy Pelosi.

China, which also announced it was sanctioning Ms Pelosi and her family, views the visit as a challenge to its claims of sovereignty over Taiwan.

The self-ruled island sees itself as distinct from the mainland.

The measures were announced by China's foreign ministry on Friday. It said dialogue between US and Chinese defense officials would be cancelled, while co-operation on returning illegal immigrants, climate change, and investigating international crime would be suspended.