Seems like it was 'forced to take leave' scenario. Najib slated to give key note address at Shangri-La Dialogue. He cannot be sitting there listening to Najib tell the word,"war is waste of time as it won't resolve problems". Nathan also conveniently time his trip to Mauritius so that Presidential hopefuls Abdullah Tarmugi and Tony Tan can appear at Istana dinner to commemorate 10th Anniversary of the SLD.