Hagel appeals to the Pat Buchanan sorts. Anti immigration, pro tariff, anti-Iraq war, resentful of east coast elites.. He likes to parrot those words "America is a Republic, not an Empire".
Problem with GWB foreign policy of crusading for democracy is the armed forces needed to back up the diplomacy is too small. 600 ship Navy, 16 division Army and 33 tactical air wing Airforce would do the trick. Plus we also need a good production/manufacturing base to provide parts, apares and replacements. Since Bush 41, the US moved all these capabilities overseas to Communist China. Batteries and computer chip manufacturing is next.