Britain’s tough response in holding Russia responsible for a poisoning attack on its soil increased the pressure on President Trump to join with a NATO ally in taking action, even as he has been reluctant to retaliate for Moscow’s intervention in the 2016 election in the United States.
Mr. Trump, who was visiting Missouri on March 14, has not personally addressed the attack since London assigned blame to Russia and left it instead to aides to express public solidarity with Prime Minister Theresa May after she expelled 23 Russian diplomats, canceled high-level contacts and vowed to impose more sanctions.
