Taiwan monitoring Chinese strike group off the coast after president meets US speaker

China has said it would take resolute' measures to defend sovereignty, after denouncing Tsai's meeting in California with McCarthy

• China-Taiwan tensions explained in 30 seconds

Taiwan authorities are monitoring Chinese military activity including a carrier strike group about 200 nautical miles (370km) off the main island's coastline, after the Taiwanese president, Tsai Ing-wen, met US House speaker Kevin McCarthy in Los Angeles.

In the meeting, held at the Ronald Reagan Presidential Library, McCarthy stressed the urgency of arms deliveries to Taiwan, while Tsai praised the strong and unique partnership" with the US..