China lashed out at Germany on Monday, warning Berlin against "inciting confrontation and hyping up tensions" after its foreign minister said Beijing was "increasingly aggressive" in the Asia-Pacific region.
During a visit to Japan, Johann Wadephul said China had made repeated threats to "unilaterally change the status quo and shift borders in its favour", citing its behaviour in the Taiwan Strait and the East and South China Seas.
"Any escalation in this sensitive hub of international trade would have serious consequences for global security and the world economy," Wadephul said Monday after talks with Japanese counterpart Takeshi Iwaya.
A statement issued on Sunday before Wadephul's visit to Japan -- and later Indonesia -- said that China was "increasingly asserting its regional supremacy and, in doing so, is also questioning principles of international law."
China's increasingly aggressive behaviour in the Taiwan Strait and the East and South China Seas also has implications for us in Europe.
"China's increasingly aggressive behaviour in the Taiwan Strait and the East and South China Seas also has implications for us in Europe: fundamental principles of our global coexistence are at stake here," the statement quoted Wadephul as saying.
China's foreign ministry spokesperson Mao Ning hit back on Monday, telling a regular news conference that the situation in the East China Sea and the South China Sea "remains generally stable".
"We urge the relevant parties to respect regional countries, resolve issues through dialogue and consultation, and safeguard the common interest of peace and stability, instead of inciting confrontation and hyping up tensions," she said when asked about Wadephul's comments.
"The Taiwan question is China's internal affair," she added.
We urge the relevant parties to respect regional countries… and safeguard the common interest of peace and stability, instead of inciting confrontation and hyping up tensions
'War machine' support
In the joint press statement in Tokyo, Wadephul also criticised "China's support for the Russian war machine" in Ukraine.
"Without it, the war of aggression against Ukraine would not be possible. China is Russia's largest supplier of dual-use goods and Russia's best oil and gas customer," Wadephul said.
He also said ahead of talks later Monday between US President Donald Trump, Ukrainian President Volodymyr Zelenskyy and European leaders that security guarantees for Kiev were "crucial".
Trump's summit on Friday with Russian counterpart Vladimir Putin in Alaska "made it clear that for a just and lasting peace, Moscow must finally act. Until that happens, pressure on Russia must be increased, including with increased aid to Ukraine," Wadephul said.
The talks on Monday in Washington are about establishing "the elements of a negotiated solution on the path to a just peace for Ukraine," he said.
"Firm security guarantees are crucial for this. Because Ukraine must be able to defend itself effectively even after a ceasefire and peace agreement."

China supports all efforts for peace
China, on the other hand, called for "all parties" involved in peace talks in Washington aimed at ending Russia's war in Ukraine to reach an agreement "as soon as possible".
"We hope that all parties and stakeholders will participate in the peace talks in a timely manner and reach a fair, lasting, binding and acceptable peace agreement to all parties as soon as possible," Mao Ning said.
Asked to react to the Alaska summit, Mao said: "China supports all efforts conducive to the peaceful settlement of the crisis and is glad to see Russia and the United States maintain contact, improve their relations and promote a political settlement process of the Ukraine crisis."