Alliance to ‘reaffirm’ support for Ukraine and pledged ‘ironclad commitment to collective defence’ spelled out in the defence partnership’s article 5.

Britain and its NATO allies will increase defense spending by at much as 5% of GDP in the next decade, officials have announced.

NATO meets for its annual summit this week, and the U.S. is pushing for allies to sharply increase their defense spending to 5% of gross domestic product.