Missiles or mediation? Trump envoys shuttle between Russia and Ukraine

Exactly two months ago, Ukraine’s momentum was all the talk at a Nato summit in Turkey. What with its long-range drones and Donald Trump’s surprise announcement that the US would allow Kyiv to produce Patriot anti-ballistic missiles on home soil. That was then. This is now: Trump's deal's yet to materialize, Russia’s ramped up cruise missile launches and Ukraine’s run out of air defenses to stop them. Moscow's also failing to stop incoming missiles. What happens in war when for both sides, offense proves better than defense?