Boris Johnson and President of Finland press conference

The transcript discusses NATO's expansion and its implications for Russia, focusing on Finland's security strategy and the British military's investment issues. The Finnish President emphasizes that joining NATO is not a zero-sum game and aims to enhance security without threatening others. The British Prime Minister addresses concerns about the military's size and effectiveness.

In what way does the speaker argue that increasing security does not detract from others?

What does the speaker mean by stating that security is not a zero-sum game?