By Ben Aris in Berlin Both Russian President Vladimir Putin and Ukrainian President Volodymyr Zelenskiy have given up on ceasefire talks, calling them pointless as both sides increase the frequency and ferocity of their mutual missile strikes on each other's territory in recent weeks.

Russian and Ukrainian delegates met in Istanbul on Monday for their second set of direct peace talks, a day after Kyiv launched a shock drone attack on Russia’s nuclear-capable bombers, in an operation that President Volodymyr Zelensky said was a year and a half in the making.