NATO summit to boost defences NATO looks set to agree to the most significant overhaul of its defences since the Cold War, including a seven-fold expansion of its 40,000-strong response force to a new Allied Reaction Force NATO members NORWAY SWEDEN DENMARK GERMANY FRANCE ITALY Baltic Sea Kaliningrad Suwalki Gap POLAND SLOVAKIA CZECH REP. AUSTRIA HUNGARY FINLAND ESTONIA LATVIA LITHUANIA BELARUS UKRAINE ROMANIA RUSSIA Moscow Donbas region CRIMEA Annexed in 2014 Black Sea 250km 400 miles May 18: Sweden and Finland apply to join NATO Issues on NATO’s agenda at summit in Spain Battlegroups: NATO Secretary General Jens Stoltenberg (right) to strengthen battlegroups up to brigade level – from about 1,000 troops to between 3,000 and 5,000 Allied Reaction Force: Plan to boost NATO Response Force – deployed for first time following Russia’s invasion of Ukraine – to more than 300,000 military personnel Kaliningrad: Russia’s military presence in its westernmost region includes nuclear-capable Iskander missiles, HQ of Baltic fleet and tens of thousands of troops Suwalki Gap: Russia has threatened retaliation for EU sanctions blocking transit of goods to Kaliningrad from Belarus. Kremlin could seize 65km-wide choke point Sources: Associated Press, NATO, Stars and Stripes Picture: Getty Images © GRAPHIC NEWS