Xinhua
A man with a gun stands near the entrance to the United Nations headquarters in New York, United States, on Dec. 2.
Police confront a man with a gun near the entrance to the United Nations headquarters in New York, United States, on Dec. 2.
Police are on guard near the entrance to the United Nations Headquarters in New York, United States, on December 2.
Police are on guard near the United Nations headquarters in New York, United States, on December 2.
On December 2, police blocked a street near the United Nations headquarters in New York, United States.