The US Navy said two warships were cruising via international waters within Taiwan Strait on Sunday, marking the first operation since the US House speaker, Nancy Pelosi, visited Taiwan.

"The ships' navigation along through Taiwan Strait emphasizes the US adherence to a fair and open Indo-Pacific," the statement stated. 

Upon Pelosi's arrival in early August, China, which asserts Taiwan as its sovereign territory, began military maneuvers near the island, which have since intensified.

Since the victorious Republic of China government retreated to Taiwan in 1949 after losing a civil war with the Marxists, the narrow strait has been a constant source of geopolitical tensions.

The Biden government has attempted to maintain concerns between Washington and Beijing at bay by emphasizing that such presidential visits are commonplace.

Taiwan's government claims that the Chinese People's Republic has never controlled the island and hence has no authority to claim it, and that only the island's 23 million people can decide its existence.