(April 2012). A proof test is a form of stress test to demonstrate the fitness of a load-bearing structure, or rescue strop. An individual proof test may apply only to the unit tested, or to its design in general for mass-produced items. Such a structure is often subjected to loads above that expected in actual use, demonstrating safety and design margin.
The United States and North Korea do not have diplomatic relations. The Swedish Embassy in North Korea is the U.S. protecting power and provides limited consular services to U.S. citizens. The U.S. Special Representative for North Korea Policy is Ambassador Joseph Yun. The U.S. Special Envoy for North Korean Human Rights Issues is Vacant.
As North Korea and the United States have no formal diplomatic relations, Sweden acts as the protecting power of United States interests in North Korea for consular matters.Since the Korean War, the United States has maintained a strong military presence in South Korea.In 2015, according to Gallup 's annual World Affairs survey, only 9% of Americans have a favorable view of North Korea.ince the Korean War, the United States has maintained a strong military presence in South Korea. In 2015, according to Gallup 's annual World Affairs survey, only 9% of Americans have a favorable view of North Korea.