Nato Secretary General Jens Stoltenberg, front left, US President Joe Biden and British Prime Minister Boris Johnson pose for a photo during an extraordinary Nato summit in Brussels. AP Photo
Jens Stoltenberg speaks at a press conference at the end of the summit in Brussels. EPA
France's President Emmanuel Macron shakes hands with Mr Biden as they arrive at Nato headquarters. AFP
The leaders gather for a photo in Brussels. AP Photo
Japanese Prime Minister Fumio Kishida and Boris Johnson attend a bilateral meeting. Getty Images
Joe Biden speaks with Jens Stoltenberg during the summit. Reuters
European Commission President Ursula von der Leyen and Boris Johnson. PA
Mr Biden is greeted by Mr Stoltenberg as he arrives for meetings with Nato allies in the Belgian capital. AP Photo
Mr Johnson addresses media representatives after he arrives in Brussels. AFP
Canada's Prime Minister Justin Trudeau speaks to the press in Brussels. AFP
Mr Macron shakes hands with Turkish President Recep Tayyip Erdogan. AFP
Mr Stoltenberg at Nato's headquarters in Brussels. AFP
Mr Erdogan with officials including Turkey's Foreign Minister Mevlut Cavusoglu as he arrives in Brussels. AFP
Mr Macron arriving at the summit. AFP
Nato Secretary General Jens Stoltenberg, front left, US President Joe Biden and British Prime Minister Boris Johnson pose for a photo during an extraordinary Nato summit in Brussels. AP Photo
Jens Stoltenberg speaks at a press conference at the end of the summit in Brussels. EPA
France's President Emmanuel Macron shakes hands with Mr Biden as they arrive at Nato headquarters. AFP
The leaders gather for a photo in Brussels. AP Photo
Japanese Prime Minister Fumio Kishida and Boris Johnson attend a bilateral meeting. Getty Images
Joe Biden speaks with Jens Stoltenberg during the summit. Reuters
European Commission President Ursula von der Leyen and Boris Johnson. PA
Mr Biden is greeted by Mr Stoltenberg as he arrives for meetings with Nato allies in the Belgian capital. AP Photo
Mr Johnson addresses media representatives after he arrives in Brussels. AFP
Canada's Prime Minister Justin Trudeau speaks to the press in Brussels. AFP
Mr Macron shakes hands with Turkish President Recep Tayyip Erdogan. AFP
Mr Stoltenberg at Nato's headquarters in Brussels. AFP
Mr Erdogan with officials including Turkey's Foreign Minister Mevlut Cavusoglu as he arrives in Brussels. AFP