STORY: War is always changing as technology advances. And in a bid to increase their countries’ defense capabilities, NATO leaders have endorsed a big new spending target at a summit in The Hague. :: ...

THE HAGUE, Netherlands (AP) — U.S. President Donald Trump and his NATO counterparts are due to gather Tuesday for a summit that could unite the world’s biggest security organization around a new ...

NATO Secretary General Mark Rutte has suggested an Article 5–style arrangement for Ukraine as part of providing ‘Security Guarantees’ to Kyiv, which has faced relentless Russian bombardment since ...

Britain's Secretary of State for Defence John Healey (center), Italy's Defense Minister Guido Crosetto (right) and Germany's State Secretary at the Federal Ministry of Defence Jens Ploetner address ...

Polish Prime Minister Donald Tusk said on Wednesday he had asked NATO to open consultations under Article 4. It comes after Polish forces shot down 19 drones over its airspace, marking the first known ...

The president has long pressed European allies to pay more for their own security. So they may redefine what qualifies as security. By Lara Jakes and Steven Erlanger When President Trump demanded ...

Article 4 allows member states to start a formal discussion within the alliance about threats to their security. It does not commit the alliance to military action. By Jenny Gross Poland invoked ...