Even if Russia's army isn't a particularly good one, it won't matter if Ukraine's defenses crumble, war expert warns

• Ukraine's defenses are weak, making it vulnerable to Russian advances.
• Russia's military isn't necessarily the greatest, but it won't matter if Ukraine can defend itself.
• Ukraine is awaiting US aid and even resorting to crowdfunding to acquire necessary defense equipment.

The Russian military isn't the formidable juggernaut it was once thought to be, but without strong defenses and key support, Ukraine is dangerously vulnerable to a force that can still inflict serious damage, an expert is warning.

Ukraine may still have more to lose as Russia continues advancing onward after capturing Avdiivka.