NATO defence spending [Infographic]
NATO defence ministers will meet in Brussels on Wednesday to discuss bolstering troop presence in Poland and the Baltic States.
However, only four of the 26 European members of NATO are currently meeting defence spending target of 2% of GDP.
NATO is planning its biggest build-up in Eastern Europe since the Cold War backed by a four-fold increase in US military spending in Europe.
The US will increase it's European military spending to $3.4 billion in 2017.