Chinese Foreign Minister Wang Yi told the European Union’s top diplomat on Wednesday that Beijing cannot afford a Russian loss in Ukraine because it fears the United States would then shift its whole focus to Beijing, according to several people familiar with the exchange.

The comment, to the EU’s Kaja Kallas, would confirm what many in Brussels believe to be Beijing’s position but jar with China’s public utterances. The foreign minstry regularly says China is “not a party” to the war. Some EU officials involved were surprised by the frankness of Wang’s remarks.

Wang is said to have rejected, however, the accusation that China was materially supporting Russia’s war effort, financially or militarily, insisting that if it was doing so, the conflict would have ended long ago.

During a marathon four-hour debate on a wide range of geopolitical and commercial grievances, Wang was said to have given Kallas – the former Estonian prime minister who only late last year took up her role as the bloc’s de facto foreign affairs chief – several “history lessons and lectures”.

Some EU officials felt he was giving her a lesson in realpolitik, part of which focused on Beijing’s belief that Washington will soon turn its full attention eastward, two officials said.