Scott Morrison says China building a military base on Solomon Islands would be the "red line" for Australia and the United States, but did not say how Australia would respond if it happened. Key points: Mr Morrison says Australia will not have Chinese naval bases "on our doorstep" Deputy PM Barnaby Joyce says Solomon Islands is risking its sovereignty by signing the security deal with China Labor's Penny Wong has all but confirmed more foreign aid spending in the Pacific if the party is elected There are concerns about a recently signed security agreement between China and Solomon Islands and...