Diplomacy is really the only game I know close to warlight besides risk.
"Examples of grand strategy games where military tactics are highly abstracted or eliminated entirely include the board games Risk and Diplomacy" (from 1st link)
http://en.wikipedia.org/wiki/Grand_strategy_wargame
http://en.wikipedia.org/wiki/List_of_board_wargames
Supremacy 1914 is not much like warlight (much more complicated) but is still a wargame all about strategy and diplomacy.
http://www.supremacy1914.com/
http://en.wikipedia.org/wiki/Supremacy_1914