16 September, 2017
"I don't want to rush into a statement".
An improvised explosive device detonated at Parsons Green subway station, injuring 18 people and causing chaos that led to a stampede at the scene. Police categorized the incident as a terror attack.
McMaster responded by trying to spin Trump's tweet as merely pointing out that major law enforcement agencies are concerned about terrorist attacks, which is not what Trump tweeted.
In his tweets, Trump called for dealing with terrorists "in a much tougher manner", such as cutting off internet recruitment.
On Friday passengers received burns and injuries after the explosion and ensuing stampede at 8:20 a.m. local time.
National Security Adviser H.R. McMaster suggested later that Trump was speaking generally.
United Kingdom officials have not yet released information on the suspect or whether they were on law enforcement's radar.
"I never think it's helpful for anybody to speculate on what is an ongoing investigation", she said.
Later, Trump told reporters at the White House he planned to speak with May.
Trump also followed his tweets on the London incident with one criticizing the administration of former President Barack Obama while claiming success against fighting terrorists. He has used the phrase more sparingly since taking office, avoiding it during his remarks on the anniversary of the September 11 attacks.
"The travel ban into the United States should be far larger, tougher and more specific-but stupidly, that would not be politically correct!" he wrote, appearing to link the ban with the London attack.
Trump concluded, "Must be proactive & nasty!"
Rest assured, Donald Trump's call to shut off the internet really has nothing to do about stopping terrorism.
In June, he blasted London Mayor Sadiq Khan for telling residents after an attack at London Bridge that there was "no reason to be alarmed" by an increased police presence. "We need the Travel Ban as an extra level of safety!"
The president also has had dust-ups with allies over the use of intelligence.
The official said that at this point, US agencies had no information to back up any suggestion by Trump that Britain had advance warning or specific intelligence on the attack.
The bomber's identity and details of the probe leaked to U.S. media before British officials felt ready to disclose them.
The UK Government has yet to confirm whether the attacker was known to them.