This month the prime minister has met Barack Obama, attended the United Nations conference on climate change in New York and will head to Pittsburgh for the G20 meeting of world leaders.

• 这个月哈珀已经会晤过奥巴马总统，参加了联合国在纽约的关于气候变化的会议，并即将参加在匹兹堡举行的20国集团峰会。