Set One's Sights On Meaning

(idiomatic) To give one's close attention to, especially as a goal, objective, or other object of special interest.

Example: 1984 Oct. 30, "Pocket of Atlanta Fights Developers," New York Times (retrieved 1 Aug 2015):
  Spurred by a real estate boom in which houses that sold for $15,000 just six years ago now sell for upwards of $150,000, the developers have set their sights on Cabbagetown.
2006 Nov. 1, Steve Rosenbush, "Is a Google-Clear Channel deal at hand?," Businessweek (retrieved 1 Aug 2015):
  Google, known for its cutting-edge Internet software, may be setting its sights on the low-tech radio market.
2008 June 27, "Blair Campaigns for Climate Action," Time (retrieved 1 Aug 2015):
  Blair has also set his sights on solving another insolvable problem during his retirement: climate change.