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In page Kösem Sultan:

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A letter to the Grand Vizier Damad Hilal Pasha, dated 1627, reveals Kösem's concern about two troublesome matters: the security of Yemen, which would break free of Ottoman control in 1636, and the chronic problem of making salary payments, especially to the Janissaries, the frequently unruly Ottoman infantry.[citation needed] The letter also mentions her anxiety about Murad's health and her frustration over her lack of direct control over important decisions: