Japanese and South Korean prime ministers made little progress Thursday in de-escalating a feud over wartime history that has led to a tit-for-tat trade spat but managed to agree on the need to continue dialogue.The 20-minute meeting between Shinzo Abe and his counterpart Lee Nak Yon in Tokyo was the highest-level discourse in more than a year between the two Asian neighbors who have seen ties sink to their worst level in years.Lee, who attended Emperor Naruhito's enthronement ceremony on Tuesday, handed Abe a letter from South Korean President Moon Jae In, which said Japan is an "important…READ FULL ARTICLE