The Chinese military has integrated its land, sea and air conventional forces with new space, cyber, electromagnetic and cognitive domains to enhance its joint operations capabilities and will aim to equal or surpass the United States in 2050, a Japanese Defense Ministry think tank warned Friday.

The annual report on China's security strategy by the National Institute for Defense Studies was released as the rivalry between Washington and Beijing has been intensifying, and attention is growing on the timeline for a possible Chinese invasion of self-ruled Taiwan.

In March, then U.S. Indo-Pacific Command chief Adm. Philip Davidson said that China could try to invade Taiwan "in the next six years."