The Ukrainian feminist protest group Femen has staged a two-woman demonstration against Vladimir Putin in Milan, where he is expected to attend a summit of world leaders on Thursday.

The protesters stood in front of Milan’s cathedral and poured buckets of red wine, which they said represented the blood of Ukrainian people, over their bare chests.

The message “Stop ignoring Ukrainian bloodshed” was written on one woman’s torso, while the other made direct reference to the two-day summit of more than 50 European and Asian leaders: “ASEM allies of Putin,” read the message on Femen leader Inna Shevchenko’s chest.

“We believe that welcoming a killer, a person who is killing a whole nation right now – and this Ukrainian blood is right here, is on us – and shaking his hand, is ignoring the big torture, the big killing and the war in Ukraine that is started and supported by Putin,” she told AFPTV.

Although its main purpose is economic, the ASEM summit looks set to be dominated by the security situation in eastern Ukraine, where a fragile ceasefire struck last month has been repeatedly violated. An ongoing dispute over Russian gas supplies to Ukraine is becoming increasingly urgent as winter approaches.

Putin and the Ukrainian president, Petro Poroshenko, are scheduled to meet at a breakfast on Friday morning. The Italian prime minister, Matteo Renzi, will also host David Cameron, Angela Merkel, François Hollande and the EU’s top officials.

It is possible that Putin and Poroshenko may also meet face-to-face in a separate bilateral meeting on the sidelines of the summit. Poroshenko has been quoted as saying the whole world had “high expectations” of his talks with Putin.