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.
The United States cooperates in some capacity with nearly every other country in the world, some very closely. The US doesnât have enemies, only threats. China and Russia are considered to be the only near-peer threats. Iran is considered to be another threat because of its aggressive behavior and capacity to create nuclear weapons. IS would probably call Iran and the US allies though. North Korea probably comes closest to being an enemy.