Trump commented on the vehicle and knife attack that killed at least seven people in London at the conclusion of a Sunday night fundraiser for Ford's Theater, scene of one of the most famous acts of bloodshed in American history: the assassination of President Abraham Lincoln. If we don't get smart it will only get worse, ' he added.
Trump, Sanders hinted, interpreted Khan's calm as a message of complacency - referring not to the uniformed troops but to the terror threat they represented. His top aides had wanted this week to focus on Trump's plans to upgrade America's bridges, roads, airports, and other infrastructure.
Khan said he had been too busy dealing with the fallout from the attack to respond directly to the tweet. "We have had to close police stations, sell police buildings, and we've lost thousands of police staff", said London Mayor Sadiq Khan, a member of the opposition Labour Party.
Khuram Shazad Butt and Rachid Redouane, both from Barking, were two of three men involved in Saturday's attack, Scotland Yard confirmed on Monday. Two additional addresses were searched on Monday.
It's unclear if Trump had consulted with the US embassy in London before publishing his newest tweets. She called Archibald a talented social worker and exceptional human being who inspired all who worked with her. "Chrissy was a bright light", she said.
White House spokeswoman Sarah Sanders said she did not think it was fair to characterize Trump's tweets as "picking a fight" with Khan, who is the first Muslim elected as London mayor.
Khan's aides accuse Trump of taking his comments out of context.
President Donald Trump lashed out at his own Justice Department Monday for seeking the Supreme Court's backing for a "watered down, politically correct version" of the travel ban he signed in March. During the US presidential election campaign, Khan was among many people who spoke out against Trump's proposed ban on Muslims entering the United States, an idea he said would play into the hands of extremists.
Undeterred by grammar or the actual context of Khan's statement, Trump doubled down on Monday. "It risks alienating mainstream Muslims".
In an appearance on NBC's "Today Show", Conway said people should pay attention to what the president is doing, saying people in England had tried to inform authorities about the terrorists before the attacks happened. "They were stabbing her", witness Gerard Vowls said. "In any event, we are EXTREME VETTING people coming into the USA in order to help keep our country safe".
Trump said he had spoken with British Prime Minister Theresa May to express America's "unwavering support" and offer USA assistance as the British government works to protect its citizens and bring the guilty to justice.
The police response to the rampage, which saw officers shoot dead the attackers within eight minutes of police receiving the first call, has been widely praised.
This prompted Mr Khan's spokesman to state the mayor has "more important things to do than respond to Donald Trump's ill-informed" tweet, before Mr Khan later suggested he does not regard Mr Trump's planned state visit as welcome.