Reacción a "Reactions to the fall of a large Chinese rocket fragment to Earth have closed part of the airspace"

Re-entry of launch rockets is quite common. Whenever an artificial satellite is launched into space, at the same time a part of the rocket remains in orbit and will eventually fall to earth. This has been the case since Sputnik 1 and will continue to happen. 
 
These pieces of the rocket re-enter the atmosphere after some time (days or weeks) and the collision with the air destroys them. Only in the case of very large rockets can fragments survive to reach ground level. 
 
However, there are two circumstances that make this particular case special. The first is that it is a large rocket, because it has launched no less than a complete module for the Chinese space station, and that requires a considerable launcher. Secondly, satellite launches, both large and small, are becoming more and more frequent. 
 
The risk is very small. It is reasonable to restrict air traffic in potentially affected regions because we should not risk losing an aircraft in flight, no matter how small the danger. But, at ground level, the likelihood of large debris arriving, falling in areas where it can cause damage and, in addition, personal injury, is astronomically small. The population can therefore rest assured. 
 
No matter how small the risk, accumulated over time and with an increasing rate of releases, sooner or later damage to property or people will occur. This is why organisations (public and private) launch satellites but take measures to ensure that their rockets re-enter in regions where they cannot cause any damage. Systems to force a safe re-entry are standard technology and are certainly within the reach of a power like China, which is capable of building its own space station in little more than a year. 
 
It would therefore be desirable to promote the establishment of international regulations requiring rocket launchers to ensure safe re-entry.