Ukraine has shown reporters fragments of the missile it says hit a key government building in Kyiv this weekend, identifying it as a Russian Iskander cruise missile.
Officials here now believe the building was struck deliberately in the early hours of Sunday morning.
Vladimir Putin's response to Donald Trump's peace efforts has been a clear escalation in Russian attacks.
But they don't only target the Ukrainian capital.
In the eastern Donbas region, more than 20 civilians were killed by a Russian glide bomb on Tuesday as they queued to collect their pensions.
Volodymyr Zelensky condemned the strike on the village of Yarova as savage and called once again on Ukraine's allies to increase the pressure on Moscow through sanctions.
His office said some US and European weapons components are still reaching Russia, including for the Iskander missile. Moscow has already substituted the rest with its own production.
Strong actions are needed to make Russia stop bringing death, Ukraine's president wrote.
Our team was filming on Sunday morning during the air raid on central Kyiv and captured the moment the cabinet of ministers was hit. The images appear to show a direct strike: a missile suddenly arcs downwards, right before the explosion.
The missile - packed with more than 100kg (220lb) of explosives - did not detonate, so the damage is limited to three floors. But it's still significant.
We saw fragments of that missile, now being collected as evidence: mangled metal pieces, some with Cyrillic lettering on them, gathered in a heap.
Weapons experts we've consulted agree that it looks like a Russian cruise missile and say the damage is consistent with an Iskander striking but not exploding.
In Kyiv, the increase in early morning attacks is obvious: they've grown more frequent - but most importantly they're bigger in scale. Russia now launches hundreds of drones at a time, deliberately draining Ukraine's resources.
Ukraine wants more than condemnation. It's still calling for action against the Russian economy and the defence sector there. Vladyslav Vlasiuk, Zelensky's adviser, told me the sanctions imposed so far were making a difference.
Ukrainian teams have been examining the remains of the missiles and drones launched by Russia since 2022, and they revealed there are fewer Western-made components now. But the increase in production of Russian parts, including microchips, poses a new threat.
As the situation escalates, the hope remains that international support will intensify, bringing necessary resources to aid in Ukraine's defense.
