Beijing kicked off military drills one day after a controversial visit to Taiwan by US House Speaker Nancy Pelosi. She's the highest ranking US official to visit there in a quarter of a century.

Chinese State TV broadcast footage of missile launches, and featured statements from an army commander. He says the military is testing Chinese troop capabilities under actual combat conditions.

China claims Taiwan is an inalienable part of its territory. The defense ministry has said the military would carry out the operations to "resolutely safeguard China's sovereignty and territorial integrity."

Foreign ministers from the Group of Seven expressed concern over the exercises, saying they risk "unnecessary escalation." They called on China to resolve "cross-Strait differences" by peaceful means.

Taiwan's defense ministry says suspected drones flew close to two remote islands that are effectively under its control. The military spokesperson says flares were fired to warn off the drones.

Meanwhile, Taiwan says the number of cyberattacks targeting its networks have more than doubled in recent days. Some of the websites targeted include those of Taiwan's presidential office and its defense ministry.

A spokesperson for Taiwan's cabinet says its databases recorded a record-breaking surge in activity during Pelosi's visit, and blamed China for the cyberattacks.