<span style="color: #222222;">Acting US Defence Secretary Patrick Shanahan plans to meet with his Chinese counterpart next week at a regional security conference in Singapore.<br />''  <br />'' The Pentagon said in a statement in Washington today that Shanahan sets off Tuesday on a tour of Asia that will take him to Indonesia, Singapore, South Korea and Japan.<br />'' <br />'' The new US defence strategy identifies Russia and China as the two top potential adversaries of the United States. Reproaching Beijing for militarising the South China Sea, the United States has been conducting regular freedom of navigation operations in the Pacific, sending warships near disputed islands and overflying international airspace.<br />'' <br />'' </span><br />