"There is no point in prolonging the killings. And I will wait for Putin on Thursday in Turkey," President Volodymyr Zelensky said.

"Russia is ready for negotiations without any preconditions," Putin claimed in an address marking the end of the three-day Victory Day ceasefire. He invited Ukraine to begin talks in Istanbul on May 15.

"The clock is ticking — we still have twelve hours until the end of this day," German government spokesperson Stefan Kornelius reportedly said.

Both men face charges related to terrorism and espionage. Daniil B. was detained in Lithuania, where he is in temporary custody, while Oleksandr V. remains at large in Russia.

Foreign Minister Andrii Sybiha said Ukraine and its allies discussed tougher sanctions against Russia's banking sector, central bank, and energy industry.

"We are ready for all options. But of course, we are separately waiting for a response on the ceasefire," a source close to President Volodymyr Zelensky told the Kyiv Independent.

The EU plans to unveil on May 14 its next package of sanctions imposed against Russia over its aggression against Ukraine, an EU official told the Kyiv Independent on condition of anonymity.

Polish truckers plan to restrict freight traffic at the Yahodyn-Dorohusk checkpoint on the Ukrainian border, Ukraine's State Border Guard said on May 12.

"If the Russians are using this level of specialists in urban combat, they are probably facing some difficulties," Ivan Petrychak, spokesperson for the 24th Separate Mechanized Brigade, said.

Previously, Polish Prime Minister Donald Tusk accused the Russian intelligence services of orchestrating a May 2024 arson attack on the Marywilska shopping centre in Warsaw.

"Perhaps in some areas, the intensity decreased slightly to create an image of compliance with their own announcement. But in reality, (Russia) continued attacks every day, using all available weapons — including aircraft to drop guided bombs on Ukraine," Andrii Demchenko, spokesperson for Ukraine’s State Border Guard Service, said.

Beijing supports all efforts toward achieving peace in Ukraine, Chinese Foreign Ministry spokesperson Lin Jian said on May 12 when asked about Kyiv and Europe's proposal for a 30-day truce.

"I invited His Holiness to make an apostolic visit to Ukraine. Such a visit would bring real hope to all believers and to all our people," Zelensky said.

Presidential Office chief Andriy Yermak voiced doubt about leading negotiations with anyone from Russia except President Vladimir Putin, implying only the Russian leader can make real decisions.

This includes at least seven people injured in drone attacks overnight on May 12, a date from which Kyiv and its allies put forward a demand for a 30-day unconditional truce, a step that Moscow continues to reject.