"NATO"? "Euros" were in NATO. Either way "Euros" negotiated Lisbon Agreement which was going to bring peace.
They were looking for a purpose, and the only purpose, their sole reason d'etre, as far as military alliances go, is waging war.
The Lisbon Agreement was the most overt example of interference ("If you don't like it, don't sign it," Warren Zimmerman to the Bos. Muslim leader Alija Izetbegovic), but not the only time the U.S. made any kind of peace impossible.