text:  There are a lot of Russians, centimeter by centimeter, inch by inch, okay, 100 meters per day, 200 meters per day, and unfortunately, it's successful for them. Meanwhile, Ukraine, with a smaller population, is also less tolerant of the type of casualties Russia can take. A crucial factor in holding back Russia's advance here was the U.S. lifting some restrictions to allow their long-range weapons to be used just over the border in Russia.