Kyiv (AFP) – Russian forces pressed in on Kyiv Tuesday with a series of strikes on residential buildings that killed four people in the Ukrainian capital, despite a fresh round of talks aimed at halting the war. In the highest-level EU delegation to go to Kyiv since the war began, the leaders of Poland, the Czech Republic and Slovenia travelled to the besieged capital in a sign of support for Ukraine. But tensions were mounting, with Kyiv’s mayor announcing a 35-hour curfew to deal with what he called a “dangerous moment”, while Russia broadened its assault across Ukraine with a huge strike o…