China threatens response if US House speaker meets Taiwan president

China threatened to retaliate on Wednesday if US House Speaker Kevin McCarthy meets Taiwan President Tsai Ing-wen during her planned transit of the United States, saying any such move would be a "provocation".

Tsai is due to depart on Wednesday for a trip to Guatemala and Belize that will see her transit through New York and Los Angeles.

Sources have said she plans to meet McCarthy during the California transit although there has been no official confirmation.