A man was jailed for at least 25 years for life after he admitted being "cruelly murdered" by a woman he "harassed" for sex.
Karar Ali Karar stabbed 21-year-old Jodi Miller 15 times on 25 February in a house on Milan Road in Harehills, Leeds, to "teach her a lesson".
The 31-year-old spoke to Miss Miller and offered to pay her for sex, to which she said no, according to Leeds Crown Court.
Then he stabbed her with a kitchen knife so that it broke in three places.
Miss Miller had visited a friend on Milan Street on February 24, when Karar, who lived in a nearby apartment, visited her for the first time and asked about sex.
The next day, she returned to the same apartment where Karar was told to leave after being hounded for sex again. Then he attacked her.
Judge Rodney Jameson QC said Miss Miller's murder was "extremely cruel" and "exploded in an explosive rage because she did not want to have sex with him."
He added, "The attack lasted about three minutes, you kicked it and called it a prostitute.
"It's a bitter irony to attack her because she was not ready to act that way.
"Her death was not immediate and she could say that she knew she was dying, her suffering and her fear are just imaginable."
Prosecutor Jason Pitter QC said Karar harassed Ms. Miller for sex in the days leading up to the attack and was "becoming increasingly desperate, frustrated and ultimately angry".
Simon Kealey, QC, said that in 2015 Karar fled to Britain to seek asylum from Sudan.
He arrived in Newcastle before moving to Leeds.
Mr. Kealey said, "He just fell into the wrong crowd who took drugs and alcohol, and these people took advantage of his sanity."
In judgments, Judge Jameson said that "there is no evidence of Karar's sanity" that was a problem at the time of Miss Miller's assassination.