Donald Trump has said he would like China's help to deal with Russia as he seeks to bring an end to the war in Ukraine. I'd like China to help us out with Russia, the US president said on board Air Force One, as he flew to Asia for a whirlwind tour, where he will meet China's Xi Jinping in South Korea. It could be wishful thinking, however. China is Russia's biggest ally, and a vital support to Moscow since Western sanctions were imposed over its war in Ukraine. Trump's comments come off the back of a difficult week for Kyiv - the US refused to give it Tomahawk cruise missiles, EU leaders did not release frozen Russian cash to help fund its defense, and there have been more deadly strikes. Ending the Russia-Ukraine war has become a focal point for Trump in recent months, with a ceasefire deal so far eluding him, despite his campaign promises to solve the situation quickly. On Wednesday, he announced new sanctions against Russia's two biggest oil companies - the first direct interventions the Trump administration has imposed on Russia over the war. While Trump's meeting with Xi on Thursday is still expected to focus on the hostile trade relations between the US and China, Trump said that he would talk to Xi about 'everything,' including the war in Ukraine. As Trump made his comments on Air Force One, emergency crews in Ukraine were at the scene of more Russian strikes, where several people were killed. Ukrainian President Volodymyr Zelensky reiterated the need for Ukraine's allies to step-up support.