Reducing the UK government's commitment to foreign aid spending would cost lives, American billionaire philanthropist Bill Gates has warned, BBC reports.
The Microsoft founder urged the UK to keep spending at least 0.7% of national income on foreign aid, saying it was proof of its goodwill and humanity.
Theresa May has refused to say if she will retain the spending pledge in the Conservative's election manifesto.
But the Scottish Tory leader pledged her own "absolute" commitment to it.
Ruth Davidson told BBC Newsnight: "I think that international aid not only benefits… the countries that receive it but we benefit too.
"I think we have a commitment to 0.7% on aid.