An unidentified drone suspected to have come from Belarus entered into Lithuanian airspace on Monday, according a local outlet. Darius Buta, a representative of Lithuania's National Crisis Management Center, told public broadcaster LRT that a drone was spotted at an altitude of approximately 650 feet near the capital city of Vilnius.

Spain is not the only sceptic among NATO’s ranks. Slovakia, while less vocal, has also expressed ambiguity towards the 5% threshold. President Peter Pellegrini formally backed the target in The Hague, though just days before the NATO summit, Prime Minister Robert Fico declared that “neutrality would suit Slovakia”.

As the Kremlin moves to increase defense spending and change laws surrounding troop mobilization, experts are warning that these are signals Russia is preparing for a "protracted" war not only with Ukraine,

NATO's commitment to spend five percent of GDP on defense by 2035 was meant to unify the alliance, but it's revealing dangerous fault lines between members who face Russia's threat and those who don't.

Russian President Vladimir Putin's war in Ukraine and President Trump's tough stance on NATO have 'energized' the alliance into action, experts explain unique circumstances that led to unprecedented commitments.

"I am very open to having a public debate about the future of Austria's security and defense policy," Austria's Foreign Minister Beate Meinl-Reisinger said. "Although there are currently no majorities in parliament and in the population for joining NATO,

As NATO recalibrates its deterrence strategy, the return of US nuclear weapons to Britain is a powerful signal -- one aimed not just at allies, but at adversaries watching closely from Moscow to Tehran.

A Norwegian P-8A "Poseidon" flew close to Russia's major submarine hubs in the Murmansk region before heading to the Norwegian archipelago of Svalbard.

You might want to call Vladimir and say, ‘Hey, friend, we are still buying stuff from you, but you have got to get serious when it comes to these negotiations on the cease-fire or a peace

The defense alliance of 32 countries is planning to invest billions in its security over the coming decade. But it’s a splurge that some European NATO members, saddled with huge debt burdens, can ill-afford.

Business Insider flew aboard the decades-old aircraft during a recent surveillance mission. NATO plans to replace the E-3 in the coming years.