Russian ambassador to Poland, Sergei Andreev, is blocked by a few dozen pro-Ukrainian demonstrators as he comes to lay flowers at a Soviet memorial in Warsaw on the day Russia celebrates Victory Day over Nazi Germany in World War II. An art installation at the entrance, comprising hundreds of Ukrainian flags and memorial crosses for Ukrainians killed during the Russian invasion also includes several mock-ups of residential buildings destroyed by Russian shelling in different Ukrainian cities. "Our request and of course our strongest wish ever is to see that Russian diplomats are sent away from Poland," says pro-Ukrainian activist Viktoria Pogrebniak. IMAGES AND SOUNDBITES