Qatar blockade

Qatar is a very special emirate of the Persian Gulf coast.
One of its peculiarities is that, with 145,000 US dollars per person per year, it is the state with the highest per capita income in the world.
Another peculiarity is its small size, barely 11,580 km2 with 2,600,000 inhabitants of which only 300,000 are from Qatar, 2,300,000 are foreigners, usually migrant workers from Asian countries.
Its territory is extremely arid, with very high Summer temperatures (they can reach 50 degrees Celsius). There is practically no natural agricultural land, scarce production was limited to date palms, extensive rearing of camels and goats, fishing on its Gulf coasts, and diving for pearl oysters.

With these limited natural resources it is not surprising that the population was traditionally very scarce. In 1904 it amounted to only 27,000 inhabitants.
Nor was there too much interest in seizing the territory by the colonial powers. In spite of that, at the end of the XIX century, Qatar was incorporated into the Ottoman Empire and from 1916 on it was integrated into the British Empire with the status of "Protectorate".
In 1971 the Emirate gained its independence. At that time the population amounted to 112,000 inhabitants. Since 1940 oil had been discovered, production initially grew slowly, but in the last 25 years, after the discovery of large gas natural fields in Qatar Gulf waters. it has grown significantly, making Qatar one of the wealthiest countries of the world, reaching $ 145,000 per capita.

These large revenues enabled the country to invest its financial resources in many ways; public works, creation of a large global airline, purchase of professional sports teams, establishment of a news agency (Al Jazeera) and collaboration with other governments and organizations increasing its regional and global influence.
Enter "the Kingdom"
Recently Saudi Arabia has undergone some changes at the governmental level. The current king is Salman ibn Abdul Aziz but the effective government is carried out by his son Mohammed ibn Salman (although formally the prince of the crown and successor of the king is Muhammed bin Nayef who at the moment does not have any power having been left to the margin of the political decisions).
Following the seizure of power by Mohammed bin Salman, Saudi Arabia began to develop aggressive expansionist policies. This can be seen in the continuing bombings in Yemen (fighting the Shi'ite-based Houthi government) at the head of a Saudi-controlled coalition with strong US support.
Donald Trump's clumsy visit to Saudi Arabia took place recently, irresponsibly accepting Saudi suggestions of Qatar's role in promoting terrorism.
With the approval of the US, Saudi Arabia has decided a general offensive against Qatar, including breaking relations, expulsion of diplomats and Qatari citizens, banning overflight of airspace by Qatar Airways, closure of Al Jazeera offices in Arabia , etc. The Saudi decision was accompanied by the Arab Emirates, Bahrain, Egypt, Maldives and several pro-Saudi movements in the Middle East.
                    Prince Mohammed bin Salman  
The blockade of Qatar leaves the emirate partially isolated with a single aerial and maritime exit through the territory and inland waters of Iran. At the same time, Erdogan, the president of Turkey decided to take the opportunity to intervene "supporting" the Qatari government by establishing a base in Qatari territory and sending troops.

In short, unexpectedly, Qatar is gaining support from Iran and Turkey. 
If the situation gets more tense, indirect support from Russia may appear.
If that were the case, an unusual geopolitical situation would occur. 
The hyper-enemies of all history: Iran (Persia), Turkey (Ottoman Empire) and Russia (Tsarist Empire), who have almost always been militarily and politically opposed, could ally themselves by supporting Qatar.

                                                 Tamim bin Hamad Al Thani, Emir of Qatar
On the other side we may find Saudi Arabia (and its economically dependent countries, including Egypt and Bahrain), the United Arab Emirates and, unusually, the United States.
The US would enter into a regional conflict in a position of great clumsiness and high vulnerability. Perhaps Trump reverses his decision, but probably it does not. At that moment a situation of great uncertainty for the future of the region and the world may be generated. ..