Ukraine's front-line forces aren't advancing as much as 'hoped' in the face of tough Russian defenses, but they're gaining ground, about 300 feet per day, NATO chief says

• Ukrainian forces are making steady progress in their counteroffensive.
• Though it isn't moving as fast as many hoped, Kyiv is making progress, NATO's top official said.
• Jens Stoltenberg said Ukraine is "gradually" gaining a little over 300 feet of territory every day. 

Three months into Ukraine's counteroffensive, its forces are engaged in a brutal fight against Russia's formidable and well-prepared defenses. The hard-won gains have been limited, but the Ukrainians are advancing, the top NATO official said on Thursday.