THE neighbours are very cross about last Monday's independence referendum in the Kurdish part of Iraq, which is currently known as the Kurdistan Autonomous Region (KAR).
They can't go on calling it that if and when it gets formal independence, and the leading candidate for the new name is "South Kurdistan". Which is precisely what annoys the neighbours.
Iraqi Prime Minister Haider al-Abadi, who governs the Arab majority (80 per cent) of Iraq's population, stopped international air travel to and from the Kurdish capital of Irbil as of 6pm last Friday. Iran has already stopped direct flights to the Kurdish region, and Lebanon's Middle East airlines will observe the ban from Friday.
The Iraqi prime minister also said Baghdad would fight to prevent Kurdish secession, if necessary, and he has sent Iraqi troops to take part in joint exercises with the Turkish army on the KAR's northern border. Turkish President Recep Tayyib Erdogan warned the independence referendum - "can only have a dark end."
Turkey is the great power of the region (80 million people and a big, modern economy), so Erdogan's threats to shut off the pipeline that delivers Kurdish oil to the world and to stop exporting food to Iraqi Kurdistan have to be taken seriously. The KAR is landlocked,
and Turkey is its main trading partner (about $10 billion of cross-border traffic a year).
Erdogan tried very hard to persuade Masoud Barzani, the president of Iraqi Kurdistan, to call off the independence referendum. He accuses Barzani of "treachery" for going ahead with it anyway, and warns that "If Barzani and the Kurdish Regional Government do not go back on this mistake as soon as possible, they will go down in history with the shame of having dragged the region into an ethnic and sectarian war."
Most of us were under the impression that that war had already been under way for around five years, mainly in Syria, with Erdogan eagerly feeding the flames. But his interventions in Syria were just dabbling in other people's problems; an independent Kurdish state in northern Iraq, he thinks, would be an existential threat to Turkey itself.
He may be right, because one-fifth of Turkey's population is also Kurdish, and most of them live in the part of Turkey directly across the border from Iraqi Kurdistan. He is terrified that Turkey's Kurds will catch the independence bug too, and he's willing to take strong measures against Iraq's Kurds to stop it.
That's why the talk of "South Kurdistan" is so incendiary. Seen through this Kurdish nationalist prism, it is the first bit of a big, united Kurdistan: south-eastern Turkey is "North Kurdistan", southwestern Iran is "East Kurdistan" and north-eastern Syria is "West Kurdistan." The 30 million Kurds are one of the biggest stateless ethnic groups in the world, but giving them all a national state would require dismantling Iraq, Iran, Turkey and Syria.
That's why it has never happened, although the Kurds were first promised a state of their own when the Western powers were planning the carve-up of the Ottoman empire after World War I. The Kurds have been seeking it ever since, but everybody else always lines up against them.
Iran has just said that it too will close its border with Iraqi Kurdistan, and Erdogan is confident that Turkey can bring it to its knees: "It will be over when we close the oil taps, all their revenues will vanish, and they will not be able to find food when our trucks stop going to northern Iraq," he said this week.
So why did Barzani hold the independence referendum now? Preliminary results suggest that it was hugely successful at home - a 91 per cent "yes" vote on a 72 per cent turn-out - but there's going to be a big, ugly backlash from the neighbours. There could even be a war, and the likelihood that anybody will actually recognise South Kurdistan's independence is minimal.
Barzani's motives are partly personal: he must step down before the elections scheduled for November, and he wants to stamp his own name on the independence project. But many Kurds would argue that there will never be a "good" time to go for independence, and that they must just push on. After 100 years of oppression and division, you can see their point.
■Gwynne Dyer is an independent journalist whose articles are published in 45 countries