![Belgium's Premier and Foreign Minister Paul-Henri Spaak, seated centre, tests a new pen before signing the North Atlantic Pact in Washington, DC, on April 4, 1949. He is flanked by Belgium's Ambassador to the US, Baron Silvercruys, left, and John W. Foley of the US State Department. Seated behind, from left, are Britain's Ernest Bevin, Norway's Halvard Lange, Luxembourg's Joseph Bech, Iceland's Bjarni Benediktsson, Denmark's Gustav Rasmussen, US President Harry S. Truman, US Secretary of State Dean Acheson, Canada's Lester Pearson, France's Robert Schuman, Italy's Count Carlo Spforza, Holland's Dirk Stikker and Portugal's Jose Caeiro Da Matta [File: AP Photo]](/wp-content/uploads/2021/06/AP490404041.jpg?resize=270%2C180)
Since the end of the Cold War, NATO has struggled to redefine its role and now faces a new challenge from China.
A look at how military forces around the world are reinventing the submarine for future conflicts.
Artificial Intelligence is already part of our lives and it will play a key role in future wars. But is it safe?
Military powers around the world are taking conflict technology to the next frontier – outer space.
Its military forces have been in decline after years of under-investment, but it isn’t all bad news for India.
![The aircraft carrier USS Nimitz, front, and the guided-missile cruiser USS Philippine Sea during a Strait of Hormuz transit [File: Elliot Schaudt/AFP]](/wp-content/uploads/2021/01/000_8XZ24K.jpg?resize=270%2C180)
REPORTER'S NOTEBOOK
What’s behind the significant build-up of US firepower in the Gulf
Last few weeks have seen a sharp build-up of American combat power off the coast of Iran.
![The sharp downturn in relations with its large and well-armed neighbours has forced Qatar to re-evaluate its military [File: Sorin Furcoi/Al Jazeera]](/wp-content/uploads/2018/12/0d330e293172410498a9b2d972dc0861_18.jpeg?resize=270%2C180)
Qatar’s army and navy have grown rapidly as the country spends billions of dollars to protect itself.
![Russian peacekeepers drive an armoured personnel carrier near Arutyunagomer, in the region of Nagorno-Karabakh, on November 14, 2020 [Reuters]](/wp-content/uploads/2020/12/2020-11-14T114826Z_739971235_RC2Z2K9S5TKH_RTRMADP_3_ARMENIA-AZERBAIJAN.jpg?resize=270%2C180)
EDITOR'S ANALYSIS
2020: A year in conflict
From the use of armed drones to social media blackouts, the past year has been one of firsts for warfare.
![With positions rapidly hardening between Washington and Ankara the potential, for a Turkish exit from NATO is now a possibility [File: Francois Lenoir/Reuters]](/wp-content/uploads/2020/12/2020-02-28T105406Z_1564649113_RC2M9F9PD7JV_RTRMADP_3_SYRIA-SECURITY-TURKEY-NATO.jpg?resize=270%2C180)
US sanctions on Turkey for its purchase of Russia’s S-400 missile defence system could threaten the alliance.
US to go ahead with sale of $23bn in advanced fighter jets and drones to the United Arab Emirates.