The phrase "a welcome intervention" is correct and usable in written English.
It can be used to describe an intervention that is positively received or beneficial in a particular situation.
Example: "The community viewed the new policy as a welcome intervention to address the ongoing issues of homelessness."
Alternatives: "a positive intervention" or "a beneficial intervention".
It was only this year that Theresa May as home secretary made a welcome intervention, calling for the HMIC inquiry.
"The federal government has made a welcome intervention in encouraging the gas industry to guarantee supply for electricity generation," he said.
Headlines aside, the book itself is a welcome intervention in the long debate about the difference between art and entertainment, although it's a shame that Josipovici is not always as lucid or precise as one could wish.
http://10.192.130.30 8079/cgi-bin/MogulServiceLib Action=GetAssetData&dbName=GNL+Picture+Library&userName=Tamsin+Rutter&key=GD*33481708 There must be a welcome intervention that will help bridge these gaps in a way that could be enormously beneficial to local government and its communities.
Joan Walley, chair of the Environmental audit committee of MPs which quizzed London mayor Boris Johnson on air pollution in September, said: "Today's ruling from the European court is a welcome intervention, because it will force the government to prioritise the issue of air quality in all decisions on transport policy and infrastructure".
He wasn't one to write, so it was always a welcome intervention in my psyche to receive his correspondence.
Obama's call on Nato to strengthen its defences will be a particularly welcome intervention in those countries, particularly if it is followed by a commitment from alliance countries at this week's summit.
Her gift to Better Together was welcomed by Margaret Curran, Labour's shadow Scottish secretary, who said it was a "significant and welcome intervention from one of this country's most talented and successful women".
She added: "This is a significant and welcome intervention from one of this country's most talented and successful women.
Last week Ed Miliband – a man who really understands the issues - made a timely and extremely welcome intervention on the debate.
An individual who consistently declares and demonstrates that he is bent on a particular course of action does not welcome intervention; he is invested in the path that he follows, for reasons that may be beyond anyone's control, reasons that are deeply rooted in his psyche.
