Ukrainian President Volodymyr Zelenskiy on June 2 thanked Washington for allowing Kyiv to use the U.S.-made High Mobility Artillery Rocket System (HIMARS) in the Kharkiv region but added that it was not enough.Speaking during an unscheduled appearance at Asia’s biggest security conference, the Shangri-La Dialogue in Singapore, he asked for support and participation at a summit in Switzerland later this month aimed at bringing peace to his war-ravaged nation.Zelenskiy told a news conference that he was not able to meet the Chinese delegation at the conference and was disappointed that Beijing would not attend the summit.However, he said Russia was “using China’s influence” to “disrupt” moves towards peace and that Beijing was an “instrument” in the hands of Russian President Vladimir PutinUkraine is weathering a renewed assault from Russian forces, more than two years after the invasion began.