Initially without links:
* 70%-80% of the casualties in the Ukraine War have been from drones. Heavy armored units en masse have almost vanished as a tactic and a very large share of all artillery batteries have been destroyed. Russia has had 1.2 million military casualties, Ukraine has had 0.6 million military casualties. The fourth anniversary of the start of the latest phase of the war is coming up later this month. Russia's rate of territorial advance has been the slowest in the last century. Europe is stepping up support for Ukraine and considering deploying troops as U.S. support under Trump continues to be fickle. Ukraine's campaign against oil and gas infrastructure in Russia seems to have subsided somewhat although it has hit some relatively low value targets near Moscow. Russia has stepped up strikes against civilian targets in Ukraine (more or less indiscriminately). Russia is nearing a breaking point economically, although it has finally started to ramp up its military-industrial capacity someewhat. U.S. and European forces are being more pro-active in interrupting "ghost fleet" trade in sanctioned Russian oil.
* Germany has invented anti-torpedo torpedos.
* Japan has invented a 40mm railgun for one of its ship classes. It overcame the hurdles faced by the U.S. program with a 40mm round instead of a 155mm round, different materials in the barrel that have different electrical properties, and gallium capacitors that reduce the power supply footprint. It can fire 120 rounds in shot succession and doesn't suffer the barrel burn out problem of the U.S. attempt. It can fit in a shipping contain plus a small turret. This would be mostly useful in anti-small craft, anti-drone, anti-helicopter, and missile interception roles. It is quite accurate although range and accuracy details are not publicly available. The same ship would have lasers, something that China is also investing it. But lasers are only effective for 3-5 km, and can be disrupted by heavy sea spray, fog, low lying clouds, storms, and fog, so the lasers would be mostly for close in missile and drone defense together with something like a Phalanx Close In Weapons System. Railgun rounds are basically immune to lasers.
* The U.S. has developed a large area anti-drone system that uses microwaves to generate an electromagnetic pulse that can take down hundreds of drones at once, deployed on military truck.
* The U.S. is stepping up B-21 Raider production, a stealth bomber similar to the B-2 but a bit smaller and more modern.
* A prototype of a next generation Abrams tank was shown off at the Detroit auto show.
* China claims to have ready for prime time sensors that can see U.S. stealth aircraft.
* Progress is being made in ground drones, generally, either on a small unmanned ATV scale or a robot dog with a rifle sized weapon approach.
* Progress is being made on surface and submarine drones.
* Progress is being made on optical gun sight attachments that make it much easier to identify sniper sights that would otherwise be almost invisible at ranges up to a mile.
* China continues to be active in deploying its navy, coast guard, are paramilitary maritime forces around the Philippines and the South China sea.