The financial body cuts its growth forecast for the UK and warns the war threatens to throw the global economy "off course".
The rate of economic growth affects things like pay increases and the amount of tax raised.
People in Oxfordshire respond to plans for a government-led development corporation for the area.
The government's hopes that 2026 would be the year when growth picks up are at risk of being scuppered.
Parties hoping to form at least part of a government will want to show how they will pay for their vote-winning promises
With an annual growth rate of 3.1%, Manchester's economy has performed twice as well as that of the UK as a whole.
The chancellor's comments came after figures showed the UK economy saw a lacklustre end to 2025.
Why is the area between the cities so significant and what is East West Rail's role in the project?
Official figures suggest China's economy hit its target but analysts have cast doubt on the data.