<span style="color: #222222;">In the United States, Department of Defence, Chief of Staff, Rear Admiral Kevin Sweeney has resigned, a month after Defence Secretary James Mattis announced his departure.</span><br />'' <br />'' <span style="color: #222222;">Rear Admiral Sweeney said in a statement that the time is right to return to the private sector. </span><br />'' <br />'' <span style="color: #222222;">He is now the third senior Pentagon official to announce his resignation since President Donald Trump announced US forces would leave Syria.</span><br />'' <br />'' <span style="color: #222222;">Officials said, there is no timetable for the troop departure.</span><br />'' <br />'' <span style="color: #222222;">On Tuesday, Secretary of State Mike Pompeo will embark on a week-long tour of West Asia designed to reassure allies in the region.</span>