The Kremlin warns against premature conclusions, as reports mount that its air defenses misidentified the airliner as a Ukrainian drone

Tensions along NATO's eastern flank are high because of the risks posed by Russian military actions near the borders of alliance member states.

"Most Europeans are herbivores, they think there is sufficient grass to feed from. This is not the case," said French Adm. Pierre Vandier.

Russia is willing to work with Donald Trump's incoming administration to improve relations if the U.S. has serious intentions to do so but it is up to Washington to make the first move, Foreign Minister Sergei Lavrov said on Thursday.

The Russian cargo ship was thought to be heading to Syria to transport military equipment out of the Tartus naval base.

NATO's strategy is sound but its allies lack the arsenals and manufacturing needed to carry it out in a long war, a new report found.

A group of four NATO leaders and a representative from the European Union on Sunday said they agreed it was time to invest more in defense spending as Russia remains a chief security threat in ...

NATO’s secretary-general says he wants to discuss ways to put Ukraine in a position of strength for any future peace talks with Russia during a meeting Wednesday with Ukraine’s president and a small number of European leaders.

Amid the ongoing Russia-Ukraine war, tensions between the military alliance, which supports Kyiv in its defense efforts, and the Kremlin have continued.

The popularity of weapons training in Finland has soared in recent months, driven by concerns over expansionist neighbor Russia.

President-elect Donald Trump is signaling to NATO member-states that they must spend 5 percent of their GDP annually on defense if they want U.S. support, in order to prepare for a potential war with Russia in the next decade.