(Reuters) – Australia Prime Minister Scott Morrison said on Saturday there was “great concern” across the Pacific after Solomon Islands confirmed it was creating a security partnership with China. The Pacific island nation on Friday said it was expanding ties with China to combat security threats and ensure a safe environment for investment as it diversifies security relations. A potential China security pact with Solomon Island has sparked concerns among U.S. allies Australia and New Zealand about Chinese influence a region where they have for decades held strong sway. Asked by reporters in S…