https://www.gatestoneinstitute.org/15239/take-nato-seriously
The second major challenge the NATO summit will face is Turkey. Following the 2016 coup attempt, Turkish President Recep Tayyip Erdogan purged his army. As a result, many senior Turkish officers assigned to NATO asked for asylum in Belgium.
Turkey has the second-largest army in NATO, but it is no longer a fully democratic country, nor it is a reliable ally. As long as Erdogan’s Islamist AKP party dominates Turkish politics, the country will remain a significant problem for the Alliance.
It will be illuminating to see what the London Summit brings.
In May 2017, the new $1.23 billion NATO headquarters was inaugurated in Brussels, in the presence of US President Donald Trump. With its state-of-the-art facilities, it was supposed to be “an emblem of a strong, adaptable Alliance… a 21st century headquarters for a 21st century Alliance”, according to NATO Secretary General Jens Stoltenberg.
In November 2019, in an explosive interview with The Economist, French President Emmanuel Macron declared NATO to be “brain dead”, thereby triggering a flood of angry reactions.