"Loser terrorists must be dealt with in a much tougher manner", he wrote.
So far this year the United Kingdom has had a series of unprecedented terror attacks in Westminster, London Bridge, Borough Market, Manchester and Finsbury Park.
An improvised explosive device (IED) went off on an underground train during the morning rush hour at a busy station in London, leaving at least 22 people injured, in what Scotland Yard called a "terrorist incident".
On Twitter, he advocated for a "far larger, tougher and more specific" travel ban, adding, "but stupidly, that would not be politically correct!"
United States urges Kurds to call off independence vote
It also called on the regional government "to seize this opportunity and to enter into serious negotiations with Baghdad ". The Kurdish region won autonomy in 2005 under a constitution that established a federal republic in Iraq.
Police say 30 people, including a young boy, were injured during the attack on a rush-hour train packed with school children and commuters.
Speaking to members of the US Air Force at Joint Base Andrews outside Washington, D.C., Friday afternoon, Trump said: "Radical Islamic terrorism, it will be eradicated". Trump said in the second tweet. Police said the explosion was a terrorist attack.
This isn't the first time Trump has used terrorist attacks in London to call for his travel ban.
Officials said the attack could have been deadly.
Six New 360 Titles Join Xbox One Backwards Compatibility Today
With Intelligent Delivery, only the required portion of the game or chunk would be needed by the system to make the game work . For users upgrading from Xbox One to X, Intelligent Delivery takes care of the user at the system level.
"We have to be tougher and we have to be smarter", Trump told reporters before going into the Oval Office.
With each half-baked tweet that comes out of his phone, Donald Trump chips away at the credibility of the presidency as an institution. The news organization reports it remains unclear if the Trump Administration will look to renew the travel bans. Trump said Thursday he was "fairly close" to an agreement that could protect these so-called "dreamers" while also adding border security, as long as his wall with Mexico would be separately addressed.
As for the travel ban, A.P. notes that remains tangled in the court systems with the Supreme Court scheduled to listen to arguments on October 10.
London Mayor Sadiq Khan said he was coordinating with the police and authorities and urged Londoners to "remain calm and vigilant".
The travel ban demanded by the president came into force at the end of June and prevents for 120 and 90 days the entry to the country of refugees and citizens of six Muslim-majority countries, respectively.
Real Madrid extend Isco's contract until end of 2022 season
The game against defending champion Real Madrid on Sunday gives the Basque club the flawless chance to prove its worth. The last time Real Sociedad had such a good start in the Spanish league, it went on to win the title.