Russia has carried out its latest large-scale attack on Ukraine - days after a meeting between Vladimir Putin and Donald Trump and renewed hopes of a diplomatic solution.
Russia claims it has attacked military targets. But the footage shows otherwise - residential buildings have been hit again, with dozens of casualties. Why is Vladimir Putin doing this? Because maybe no one is stopping him, writes Sky News.
Every time US President Donald Trump has condemned Russia for such attacks, he has never taken action and done nothing to punish them.
More worrying for Ukrainians is that the Russians are gaining the upper hand in the drone war, also using Iranian technology.
The Russian president thinks he is winning this war, and it is hard to avoid the conclusion that he is using diplomacy to buy time while continuing to suppress the Ukrainians' will to win. And right now, no one is stopping him.
Ukraine is striking back, especially at Russian oil installations, but analysts do not expect this alone to be enough to convince him to end this war.
Trump tends to sympathize more with the Russians than with Ukraine. He is again blaming Ukraine for starting the war, saying earlier this week that Kiev should not have gotten into a war it had no chance of winning.
If President Trump is not ready to use his power now to end this war, what will another three and a half years of his presidency bring? That is a chilling question.