The White House said on Friday the United States strongly condemned Russia's use of chemical weapons against a former Russian agent in Britain, two days after the U.S. State Department announced sanctions over the move. "The attack against Sergei and Yulia Skripal in Salisbury, United Kingdom, on March 4, 2018, was a reckless display of contempt for the universally held norm against chemical weapons," said a spokesman for the White House National Security Council in an email. Trump has sought to improve relations with Russia despite US intelligence findings that Moscow had meddled in the 2016 US presidential election. European countries and the United States have expelled 100 Russian diplomats since that attack, in the toughest action by Trump against Russia since he came to office. Trump and his advisers have often appeared at odds over how strongly to act against Moscow.