An electron source is a bond or a lone pair of electrons. It is either a p bond or a lone pair on an atom of relatively high electron density in a molecule or ion, or a bond that must break during a reaction. An electron sink is an atom on a molecule or ion that can accept a new bond or lone pair of electrons.
What Military Threat Does North Korea Pose? It is impossible to say whether the recent threats from North Korea constitute a clear and immediate danger or whether the strong threats are just bluster in order to extract food aid and technical assistance from the international community.
As late as January of 1950, Secretary of State Dean Acheson had implied that the Korea Peninsula lay outside the all-important defense perimeter of the United States, a statement that some took to mean that the United States would not defend the ROK from communist attack. So why did the United States become involved in the Korean conflict? The decision to intervene in Korea grew out of the tense atmosphere that characterized Cold War politics. On the eve of the North Korean invasion, a number of events had made Truman anxious.