The Defence Investment Plan (DIP) was expected last year but may not be published until July - experts warn the UK needs significant spending to close big holes in its defence

The Prime Minister has been under growing pressure to unveil the 10-year defence investment plan (DIP), which was originally supposed to be published last autumn.

Britain faces increasing threats from Russia. The nation's military chief stresses the urgent need for more defence spending. The Defence Investment Plan, outlining military…