Trump faces rougher reception in NATO, EU meetings

By Jeff Mason and Steve HollandBRUSSELS (Reuters) - After a warm welcome in the Middle East and a "fantastic" visit with the pope, U.S. President Donald Trump walks on shakier ground on Thursday when European Union and NATO leaders will press him on defense, trade, and environmental concerns.Trump questioned the relevance of the NATO military alliance as a presidential candidate, and is considering pulling the United States out of the Paris agreement on climate change - a huge concern in Europe.