The correct answer is option 2, Iran and Syria.

The Kurds are actually a distinct ethnic group, not bedouin tribes, and they are spread across several countries in the Middle East, including Turkey, Iran, Iraq, and Syria. They have a long history of advocating for their own homeland and have been involved in various armed conflicts in these regions.

Option 1, Saudi Arabia and Syria, is incorrect because while the Kurds may have had some impact on Syrian politics and have faced persecution, Saudi Arabia is not directly involved in Kurdish issues.

Option 3, Afghanistan and Iran, is also incorrect because Afghanistan is not a major player in Kurdish affairs.

Option 4, Iraq and Turkey, is partially correct because Kurds have indeed faced significant challenges and conflicts in both countries, particularly in Iraq where they have sought greater autonomy. However, the question specifically asks about the source of anxiety in recent times, and the conflict in Syria and Iran`s concerns over Kurdish aspirations have been more prominent in recent years.

So, the best answer is option 2, Iran and Syria, as they have been the main countries where Kurdish issues have caused anxiety in recent times.