China on Wednesday repeated military threats against Taiwan while appearing to wind down wargames near the self-governing island it claims as its own territory that have raised tensions between the two sides to their highest level in years.

The message in a lengthy policy statement issued by the Cabinet’s Taiwan Affairs Office and its news department followed almost a week of missile firings and incursions into Taiwanese waters and airspace by Chinese warships and air force planes.

The actions disrupted flights and shipping in a region crucial to global supply chains, prompting strong condemnation from the U.S., Japan and others.

An English-language version of the Chinese statement said Beijing would “work with the greatest sincerity and exert our utmost efforts to achieve peaceful reunification.”

“But we will not renounce the use of force, and we reserve the option of taking all necessary measures. This is to guard against external interference and all separatist activities,” it said.

“We will always be ready to respond with the use of force or other necessary means to interference by external forces or radical action by separatist elements. Our ultimate goal is to ensure the prospects of China’s peaceful reunification and advance this process,” it said.