Boris vows to act as convicted terrorist kills two in London

UK Prime Minister Boris Johnson vowed on Saturday to review Britain’s sentencing system after a convicted terrorist released early from prison stabbed two people to death and wounded three in a London Bridge attack.

Members of the public were hailed as heroes for preventing even greater loss of life by tackling Usman Khan – one armed with a five-foot (1.5m) narwhal tusk and another with a fire extinguisher – before police shot him dead.

Video footage of the...