Hello,<br /><br />First of all, thank you for the fast and accurate revision! Your revisions helped very much to improve the manuscript.<br /><br />Also, I have one more question,&nbsp;<br />Based on the revised version, the correct sentence is:<br /><strong>1) Why has the Senkaku-Diaoyu territorial dispute escalated recurrently?</strong> <br /><br />rather than<br /><strong>2) Why has the Senkaku-Diaoyu territorial dispute been escalated recurrently?</strong> <br /><br />Is the second one completely wrong? <br /><br /><br />If the first one is correct, is <strong>Why are territorial disputes escalated?</strong>&nbsp; wrong as well?<br /><br />Would <strong>why do territorial dispute escalate? </strong>be correct instead? <br /><br />I would very much appreciate if I could get a reply. <br /><br />Thank you very much.