In parliament on Wednesday, Manasseh Sogavare confirmed the controversial security agreement with China had been signed despite strong opposition to the deal from the other side of the house.
The pact, a draft of which was first leaked online last month, raised domestic and regional anxieties about Beijing's increasing influence in the South Pacific.
It's feared it could open the door to China's military presence in Honiara - a claim rejected both by China and Solomon Islands.
