European Union leaders have committed to raising defence spending to NATO's guideline of 2 percent of the GDP.
They have agreed that in the past as well but never achieved it.
Only the United States spends significantly more - $650bn last year.
President-elect Donald Trump has questioned whether the US should be prepared to protect allies who do not meet their share of NATO funding.
Thursday's decision by EU leaders is a reflection of the uncertainty that hangs over European military affairs.
Many countries are wary of both an increasingly expansionist Russia and of the uncertainty surrounding the incoming US administration.
Presenter: Sami Zeidan
Guests:
Alex Kokcharov - Lead Russia analyst at IHS Markit Country Risk
Marko Mihkelson - Estonian member of parliament and head of the Estonian delegation to the NATO Parliamentary Assembly
Mark Jacobson - Former adviser to US Secretary of Defence Ash Carter
