Amid growing speculation of a Russia-Ukraine stalemate emerges a promising development for Kyiv: Ukrainian troops appear to have made their most significant territorial gains in weeks.

They have advanced this week onto the Russian-occupied east bank of the Dnipro river, where they’ve now established several fortified bridgeheads.

President Zelensky took to social media to celebrate the news. “The Kherson region’s left bank. Our warriors. I thank them for their strength and for moving forward,” he wrote, next to a photo of Ukrainian troops in small boats reaching the eastern side of the river.

Moscow too has acknowledged the Ukrainian presence on the east bank. Vladimir Saldo, the Moscow-appointed governor of Russian-occupied Kherson province, said on Telegram that Kyiv’s forces were near the village of Krynky, 18 miles north-east of Kherson city.