Police are to get an extra £100 million to fight knife crime, Chancellor Philip Hammond has announced.
Delivering a statement updating MPs on the state of the economy, he said police nationwide would share in the funding over 12 months "to pay for additional overtime targeted specifically on knife crime".
Mr Hammond said: "We must and we will stamp out this menace".
It comes after Prime Minister Theresa May defended cuts to policing - despite claims they have contributed to rising crime rates.
Wolverhampton North East MP Emma Reynolds said Mrs May had cut police numbers in her former role as Home Secretary.
Challenging Mrs May in the House of Commons, said said: "Last year 690 children were attacked or threatened with a knife in the West Midlands.
"Parents are terrified.
"Police officers across the country agree that there is a link between the knife crime epidemic and the Prime Minister's decisions as Home Secretary to cut 20,000 police officers from our streets."
Mrs May said that the Government had been forced to make cuts because of Labour.
She said: "Those decisions, yes, led to some difficult decisions in terms of public sector funding but they were taken because of the appalling set of circumstances in he economy left by Labour."
The Prime Minister pointed out that Home Secretary Sajid Javid met Dave Thompson, the Chief Constable of West Midlands Police, last week.
Three teenagers died in knife attacks in two weeks in Birmingham.
Hazrat Umar, 17, was killed in Bordesley Green on Monday; Abdullah Muhammad, 16, died in Small Heath last week; and seven days earlier Sidali Mohamed, 16, was stabbed outside a college in Highgate.
The attacks were among 269 knife crimes recorded so far this year in the West Midlands.
Data published by the House of Commons last year shows that West Midlands Police had 8,413 police officers in 2010, and 6,259 in 2018, a fall of 2,154.
West Midlands Police and Crime Commissioner David Jamieson has announced the force will be boosting its numbers to 6,739 by 2021, with the money coming from to "efficiency savings".
But it still means officer numbers will be significantly lower than they used to be.
He has also joined forces with police bosses across the country to call for 10,000 new police officers and investment in youth services, to combat knife crime and youth violence.
Also backing the demand are London Mayor Sadiq Kahn and elected politicians responsible for policing in Greater Manchester, Humberside, West Yorkshire, Leicestershire, Cleveland, South Wales and Lancashire.
In a joint letter to Prime Minister Theresa May, also signed by Labour Shadow Policing Minister Louise Haigh, they said: "This is a national crisis, and it requires leadership from the top of government."
They urged the Government to:
Convene the COBRA committee, a Government committee that meets in times of national emergency
Put 10,000 police officers back on the streets, after years of cuts
Rebuild Sure Start, the service for parents and children, and provide funding for youth services