A recent offer by the Seychelles to refuel and replenish Chinese naval ships on anti-piracy patrols in the northwest Indian Ocean was seen as the latest sign of China's expanding naval power.

But it obscured an even more significant development: U.S. deployment of a mini-air force of long-range, remotely-piloted aircraft from a network of airfields in the Seychelles, the Horn of Africa and the Arabian Peninsula to track and if necessary attack suspected terrorists on land and pirates at sea.

Victoria, capital of the Seychelle islands, is 1,480 km east of the southern tip of lawless Somalia. There and in Yemen, on the north side of the Gulf of Aden, local al-Qaida affiliates have sprung to prominence, potentially posing a wider terrorist threat.