Turkish President Recep Tayyip Erdoğan could help Russia in multiple ways if he continues to undermine the effectiveness of NATO from within the transatlantic alliance, according to diplomats and analysts.

“He will continue to play a spoiler role within NATO,” Aykan Erdemir, a former Turkish lawmaker at the Washington-based Foundation for Defense of Democracies, told the Washington Examiner. “That makes him extremely useful to Russia.”