The United States cannot trust Russia and must see 'positive actions' by Russia before easing US sanctions, Nikki Haley, US President-elect Donald Trump's nominee to be US ambassador to the United Nations, said on Wednesday 'Russia is trying to show their muscle right now. It is what they do. And I think we always have to be cautious. I don't think that we can trust them,' Haley told lawmakers during her Senate confirmation hearing. 'I think that Russia has to have positive actions before we lift any sanctions on Russia.'