NATO Leaders Meeting to be held in London

The leaders of NATO will gather to commemorate the alliance's 70th anniversary in London Dec 3-4, while the bloc's unity has been widely questioned.

The Trump administration has repeatedly complained about NATO allies' free-riding on the US military. Besides, there are disagreements within the alliance over the Iran nuclear issue and Turkey's operations in northern Syria, as well as the Nord Stream 2 pipeline project between Germany and Russia.

French President Emmanuel Macron said in a recent interview that the alliance was experiencing "brain death", triggering a backlash from Trump and Turkish President Recep Tayyip Erdogan.