The last real Democrat hawk was Senator Henry "Scoop" Jackson. There are no Democrats like him around any more, not even Leiberman. As an Orthodox Jew, Leiberman is hawkish when it comes to Middle East security issues and the war on radical Islamist terrorism, but he is not hawkish when it comes to Red China's arms build-up or North Korea.
There used to be a lot of Southern Democrats who were truly pro-national security conservatives, like F. Edward Hebert of Louisiana who chaired the House Armed Services Committee for many years, but today he would be a Republican.
Scoop was the best. I still can't believe he lost the nomination to The Peanut Farmer in 1976.