Australian PM Malcolm Turnbull has said he is "very disappointed" by Japan's decision to resume Antarctic whaling. He made the comments as he began a brief visit to Tokyo, his first since becoming leader in September. Mr Turnbull later met Japan's PM Shinzo Abe - he has vowed to raise the whaling issue with Mr Abe, though has said it will not damage their relationship. The leaders are also expected to discuss trade, defence co-operation and South China Sea territorial disputes. Japan suspended its Antarctic hunt last year following an International Court of Justice ruling against it.