Taiwan suspects China of being behind damage to a crucial subsea communications cable just off its northern coast, which occurred last week.
Ukraine's president told podcaster Lex Fridman that 3,800 North Koreans had been killed or wounded fighting alongside Russia but many more could come.
The US believes Russia intends to share advanced space and satellite technology with Pyongyang, Secretary of State Antony Blinken said.
"The area is covered with some powerful electronic warfare, nothing is flying at all," wrote one prominent blogger.
Ukrainian leadership said in May that it wanted 10 new brigades, but they've largely proven to be ineffective in combat, Michael Kofman wrote.
In a short post on Telegram, Andrii Yermak, the head of Ukraine's presidential office, said: "Kursk, good news, Russia is getting what it deserves."
The mistaken downing of an F/A-18 Super Hornet in December bears similarities with the tragic downing of an Iran passenger jet in 1988.
Authorities identified Matthew Livelsberger of Colorado Springs as the driver of the Cybertruck that exploded outside a Trump hotel in Las Vegas.
China's new Type 055 destroyer rivals the capabilities of the US's aging Ticonderoga class and may exceed it in threatening other ships.
A Ukrainian defense initiative is making steel armor plates to wrap around the control unit of the Patriot battery.
Russian ships are preparing to transport military equipment from a base in Syria to Libya after the fall of Bashar Assad, per Ukrainian intelligence.
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Hyunseung Lee and his family defected from North Korea in 2014 after a series of violent executions by North Korea's leader, Kim Jong Un.
The United Nations Refugee Agency said there were just over 130,000 Ukrainian refugees in Slovakia as of December 8.
China's stepping up its campaign to dominate the South China Sea.
The 155th Mechanized Brigade, partially trained by France, came under scrutiny after a Ukrainian reporter said 1,700 men had deserted since March.
Ukraine's military intelligence agency said its naval drones hit three Russian helicopters and destroyed two of them during an operation this week.
The militant group has been linked to a series of recent attacks.
Russia's losses in its invasion of Ukraine are thought to have soared in recent months while its forces have slowly advanced.
Threats to the West's vital communications networks are escalating.
Even while at war, Ukraine piped Russian gas to Europe. Moscow earned an estimated $5 billion in 2024, while Ukraine raked in up to $1 billion in fees.
Putin called 2025 the "year of the Defender of the Motherland" in his New Year's Eve address on Tuesday.
Ukraine's military industry has grown rapidly since Russia's invasion. Western weapons manufacturers have also opened facilities in the country.
Drones are hunting soldiers, gathering information, blowing up warships, and even fighting other drones.
CONPLAN 8888-11, the US military's response plan for a zombie apocalypse, began as training to teach junior officers how to create war plans.
A Ukrainian drone flyer argues a massive swarm could clear a path through Russian defenses for infantry and tanks to follow.
Russian and Ukrainian drone operators sometimes see each other's feeds because of how many drones are flying, giving them information about the enemy.
Syria's new government likely needs arms to solidify its hold on power. That's an opening for its Turkish backers.
Iran and its proxies and allies — from Syria to Lebanon to Gaza — have taken a beating in military engagements this year.
Ukraine said it destroyed a Russian Mi-8 helicopter with a Magura V5 naval strike drone that was equipped with missile weapons.
Ukrainian troops salvaged and refurbished BMP-3 infantry fighting vehicles, considered Russia's rival to the American-made Bradley fighting vehicle.
The THAAD battery was used in theater over the past couple of days, a US defense official confirmed to Business Insider.
Russia has launched several large-scale attacks on Ukraine this month, firing hundreds of missiles and drones at its neighbor.
Finnish officials say Russia's "shadow fleet" is sabotaging vital undersa internet cables.
Both Soviet-style tanks and American ones like the Abrams have their strengths and weaknesses as seen in the war in Ukraine.
The US enjoyed the lifesaving "golden hour" in recent conflicts. But the war in Ukraine suggests that may be over, with dramatic consequences.
Trump's plans for negotiating a ceasefire are becoming clear. But Russia's not happy with them.
Russia has found that expendable convict soldiers can clear the way for regular troops, but these tactics come at a massive cost.
Finland said last week it detained a ship that may be from Russia's shadow fleet of oil tankers as part of a probe into a damaged undersea cable.
Ilham Aliyev's comments came after the Kremlin said Russian President Vladimir Putin "offered his apologies that the tragic incident had occurred in Russia's airspace."
China is preparing paramilitary forces with amphibious and urban warfare training, possibly for a future invasion of Taiwan, military experts told BI.
Europe and NATO rely on the US for SEAD capabilities, something that Russia's invasion of Ukraine has shown is critical in a modern conflict.
Moscow has also used its own troops to carry out such attacks, which aim to overwhelm Ukrainian positions.
China's new amphibious assault ship, the Sichuan, has an electromagnetic catapult system that makes it essentially a light aircraft carrier.
The Azerbaijan Airlines plane crashed while trying to land after diverting to Kazakhstan, killing 38 people.
The AMX-10 RC has been referred to as a "light tank," but Ukraine found it wasn't up to the direct attack and repurposed it for another mission.
Flying in Lockheed's T-33 Shooting Star transported me to the past, showcasing early fighter jet capabilities and how military aviation has advanced.
The crash of the Azerbaijan Airlines flight prompted several airlines to suspend flights to Russia.