Typically, the term means that the state has been rendered ineffective and is not able to enforce its laws uniformly or provide basic goods and services to its citizens because of (variously) high crime rates, insurgency, extreme political corruption, an impenetrable and ineffective bureaucracy, judicial ...
What makes a weak state?
A fragile state or weak state is a country characterized by weak state capacity or weak state legitimacy leaving citizens vulnerable to a range of shocks. ... A more cohesive definition of the fragile state might also note a state's growing inability to maintain a monopoly on force in its declared territory.
Why are countries failing?
According to Jeffrey Sachs, an American economist, the major problem of Why Nations Fail is that it focuses too narrowly on domestic political institutions and ignores other factors, such as technological progress and geopolitics.