According to an article I found today, the numbers of students studying Arabic at colleges in the USA has been increasingly significantly since 9-11. At the same time, there hasn’t been a corresponding increase in the numbers of qualified teachers of Arabic. In some areas, potential students of Arabic have been turned away due to the lack of teachers.
Many colleges are hiring native speakers of Arabic with little or no teaching experience or qualifications. That set up sounds familiar – much of the English as a Foreign Language teaching seems to be set up along similar lines.
Elsewhere, due to popularity of Gaelic-medium education in parts of Scotland, there is a shortage of qualified teachers. There’s also a shortage of Manx-medium teachers in the Isle of Man, of Welsh-medium teachers in Wales, and of Irish-medium teachers in Ireland.