美联社新闻一分钟 AP 2015-7-04（在线收听）

1. German Chancellor Angela Merkel is ruling out further negotiations with Greece before that country holds a vote on Sunday on its proposal permit European creditors. At midnight, Greece is said to become the first developed nation to not pay its debt to the International Monetary Fund on time. 

2. President Barack Obama says he is still willing to "walk away" from the nuclear deal with Iran as it doesn't meet his goal blocking Tehran's paths to a nuclear weapon. Obama's comments came shortly after diplomats announced that talks to be extended beyond Tuesday's deadline. 

3. New Jersey governor Chris Christie has launched the 2016 campaign for president. He says both the political parties "have failed the country". In an announcement, he is calling for more compromise for politics. 

4. And this New Mexico gray wolf pups recently debut at Brookfield zoo in Illinois. The endangered species wouldn't exist without nationwide breeding program. 

I'm Matt Friedman, the Associated Press, with AP News Minute.