A judo expert who murdered a charity worker using his martial arts skills has been sentenced to life imprisonment.
Colin Payne, 61, will serve at least 15 years for using his fighting expertise to kill Mark Bloomfield.
Mr Bloomfield, who worked as a special assistant to Mother Teresa in Calcutta and on charity projects in Africa, was attacked by Payne in a pub in Swansea.
The court heard Mr Bloomfield was a ''fighter for justice'' who had worked to establish schools for girls and set up clinics for people with eye problems.
He was attacked by ''self-styled hardman'' Payne when his drink can touched the back of Payne's partner at the Full Moon in Swansea in July.
Payne was said to be ''spoiling for a fight'' when he confronted Mr Bloomfield and delivered ''two powerful blows in quick succession.''
Judge Paul Thomas QC told him: ''All that Mark Bloomfield did that day in the Full Moon was to touch your girlfriend momentarily with a beer can. That cost him his life.
''You wanted to show the regulars of the Full Moon public house that you were not a man to be trifled with.
''You had an image to protect as a self-styled hard man.
Mr Bloomfield could not be allowed to get away with touching your girlfriend's back with a beer can.''
The court heard Payne attacked Mr Bloomfield in the pub before following him outside to continue the assault.
Paramedics found Mr Bloomfield lying unconscious on the pavement with blood coming from his nose, right ear and inside his mouth.
Swansea Crown Court heard Mr Bloomfield died two days after the attack.
When police searched Payne's home they found a leaflet promoting his jujitsu, combat judo, and third dan martial arts skills.
It also advertised his services as a bodyguard, safety adviser and combat instructor.
Payne, of Swansea, denied murder but was found guilty by a jury after a three day trial.
Paying tribute to him, Mr Bloomfield's family described his loss as ''devastating.''
Mark described his life's work as an "attempt to serve humanity as unselfishly as possible.