Timeline and Maps: North Korea Ramps Up Rhetoric, Missile Systems
South Korean guards watch North Korea's side of the demilitarized zone in this January 2011 file photo. Photo by Larisa Epatko.
View a timeline of events in North Korea with accompanying PBS NewsHour analysis.
Each day this week brought another development in North Korea, including threats against the United States and the deployment of mid-range missile launchers to its east coast.
The reclusive communist country reportedly warned foreign embassies inside its borders Friday that it could not guarantee the safety of their staff after April 10.
North Korea is protesting the "hostile" joint military exercises between the United States and South Korea and U.N. sanctions imposed over its nuclear weapons tests.
The escalating threats have put South Koreans on edge and prompted the United States to send a land-based missile defense system to Guam.
In the past, North Korea has engaged in cycles of rhetoric followed by a return to normalcy, but this time feels "slightly more dangerous because you have a compounding of events that have taken place since December with the launch of a successful missile by North Korea, their nuclear test in February, (and) the U.N. Security Council's sanctions," said Charles Jack Pritchard, former U.S. special envoy for negotiations with North Korea, on Wednesday's NewsHour.
The Washington Post has a map showing estimates of how far North Korea's various missile systems can reach.
A map in the Guardian shows Japan and South Korea as potential targets.
The New York Times shows the estimated range of North Korean missile systems under development.
Browse a series of NewsHour reports from South Korea in January 2011 following North Korea's show of force, including the sinking of South Korea's ship the Cheonan and the bombing of Yeonpyeong Island.