As Japan prepares to swear in its first female prime minister, old ghosts of the past are threatening to haunt her leadership.Sanae Takaichi’s hard-edged views on history and national identity have stirred anxieties from Seoul to Beijing, even though analysts believe the former security minister’s stance may be tempered by the realities of fragile coalitions in a volatile region.Takaichi’s election last weekend as leader of the ruling Liberal Democratic Party marked a moment of both historic...