US President Donald Trump said on Friday that he trusted China and Russia not to help Iran in its conflict with the United States, but warned that any involvement would be “very bad” for both countries.Trump said Chinese President Xi Jinping had assured him during their recent meeting in Beijing that China would not give or sell weapons to Iran, including through Chinese companies. He added that Russian President Vladimir Putin had also told him that Russia would not sell weapons to Tehran.advertisementRead Full Story“I think I trust them,” Trump told reporters at the White House, saying he did not…