Ottoman naval expeditions for Southeast Asian allies were repeatedly diverted by nearer crises

Evidence

In 1563, the Muslim king of Acheh sent an embassy to Istanbul to ask for help against the Portuguese. If the Ottomans would only come and save them, he said, the infidel rulers of Calicut and Ceylon would embrace Islam. A large-scale Ottoman expedition was prepared, but at the last minute had to be diverted to Aden to deal with an insurrection in Yemen. Instead, two ships with supplies and military technicians, chiefly gunners and gun-founders, were sent. — Bernard Lewis, From Babel to Dragomans, 596

Categorization

• XREF: connects to: Ottoman westward expansion stalled due to the Safavid threat in the east; Some crises that nearly escalated to war ended peacefully through avoidance