LONDON (Reuters) – British Prime Minister Boris Johnson told Russian President Vladimir Putin that any incursion into Ukraine would be a tragic miscalculation during a call on Wednesday, Johnson’s office said in a statement. “The prime minister expressed his deep concern about Russia’s current hostile activity on the Ukrainian border,” a spokesperson from Johnson’s office said. “He emphasised the need to find a way forward which respects both Ukraine’s territorial integrity and right to self-defence. The prime minister stressed that any further Russian incursion into Ukrainian territory would …