Discuss as:

North Korean soldier keeps watch as nation issues new threats

Jacky Chen / Reuters

A North Korean soldier looks out of the window of a guard tower, on the banks of Yalu River, about 62 miles from the North Korean town of Sinuiju, opposite the Chinese border city of Dandong, on April 16. North Korea issued new threats against South Korea on Tuesday, vowing "sledge-hammer blows" of retaliation if South Korea did not apologize for anti-North Korean protests the previous day when the North was celebrating the birth of its founding leader.

Related: North Korea vows 'sledge-hammer blows' of retaliation over protests in South

Previously on PhotoBlog:

David Guttenfelder / AP

As chief Asia photographer for the Associated Press, David Guttenfelder has had unprecedented access to communist North Korea. Here's a rare look at daily life in the secretive country.