NATO Secretary General Jens Stoltenberg has criticized China for boycotting the Ukraine peace conference in Switzerland later this month. In a podcast interview with Germany’s regional public broadcaster NDR, Stoltenberg said it was regrettable that China had decided not to participate. Switzerland has invited around 160 countries to the event on June 15 and 16 to discuss possible ways to achieve lasting peace in Ukraine. China announced last week that it would not participate. Foreign Ministry spokeswoman Mao Ning in Beijing stated that there is a significant disparity between the conference’…