By Guy Faulconbridge and Max Hunder MOSCOW/KYIV (Reuters) -On the eve of peace talks, Ukraine and Russia sharply ramped up the war with one of the biggest drone battles of their conflict, a Russian highway bridge blown up over a passenger train and an ambitious attack on nuclear-capable bombers deep in Siberia.

While world leaders bicker over the prospects for peace, the deadliest conflict in Europe since World War Two is heating up fast.

After his recent visit to Kyiv, Finnish Prime Minister Petteri Orpo (NCP) says that the suffering Russia has inflicted on Ukraine is "shocking".