The only problem is Trump has nothing to do with this change. As Matthew Fay, a defense policy analyst with the Niskanen Center, told Politifact
in August: “It is comical to suggest NATO would change its counterterrorism policy in response to anything Donald Trump has said about it over the course of his campaign.”
https://www.politico.com/blogs/2016...-but-that-has-nothing-to-do-with-trump-230034
It's true that NATO countries are increasing their defense spending, but it has little to do with Trump. In fact, the changes have been in the works for years.
The big commitment was made in 2014, when all members that were spending less than 2% of GDP on defense promised to move toward the official target.
"All allies made a pledge ... to stop the cuts in defense spending, and to gradually increase spending towards the goal of 2% of GDP within a decade," a NATO official said Wednesday.
https://money.cnn.com/2017/03/01/news/nato-spending-donald-trump/index.html
The Claim
Sitting down to breakfast in Brussels just before the NATO plenary session Wednesday, Trump accused NATO allies of being freeloaders:
False
The U.S. has not been stiffed for unpaid bills by NATO allies.
https://www.npr.org/2018/07/11/628137185/fact-check-trumps-claims-on-nato-spending
