EU members are sitting on what they perceive to be a peace-making mandate, but having not being widely involved in world affairs for some time, they can’t count themselves as having a particular policy on it that is a basis for such a claim.
In contrast, America has mastered challenges, such as Afghanistan, Iraq, and now Iran, with few allies. They’ve built up a foreign policy that is proving results for people and regions in real measure. It’s a standard for outreach internationally, not silence and puffery.