Gun and drone street battles are taking place in the key city of Pokrovsk infiltrated by around 200 Russian soldiers, say Ukrainian defence chiefs. Ukraine is rushing to strengthen its positions in the strategic eastern city in the Donetsk province of the Donbas region.

In addition to the economic warfare, Ukraine’s long-range strikes on refineries had by last month destroyed or damaged about 20 percent of Russia’s refining capacity, according to one analyst. That has caused severe gasoline shortages in several regions, as Ukraine tries to bring the pain of war to ordinary Russians.

Ukraine has rushed to strengthen its positions in the strategic eastern city of Pokrovsk as separate groups of Russian troops infiltrated the embattled city, Kyiv's military said on Monday.

As Trump's plan to meet Putin is called off, Zelenskyy says another bloody night in Ukraine shows Russia isn't feeling "enough pressure for dragging out the war."

European leaders vowed to work in coordination to ratchet up the pressure on Russia as the so-called “coalition of the willing” met in London to discuss strategies to end the war in Ukraine.

When they are not fighting, they write poetry, letters home or words of praise to their supreme commander,” said one of the directors at Moscow's Museum of Victory.

U.S. President Donald Trump's administration has prepared additional sanctions it could use to target key areas of Russia's economy if President Vladimir Putin continues to delay ending Moscow's war in Ukraine,

Ukrainian President Volodymyr Zelensky said Kyiv is working with its partners in the "Coalition of the Willing" to draw up a peace plan, including a ceasefire, to end the Russian war against Ukraine in a similar vein to U.S. President Donald Trump's 20-point framework for Gaza.