How To...Go to War, Share a Cab, Run for President

5 segments
Cars sit in traffic on West 53rd street in midtown Manhattan.

Retired four-star Marine Corps General Anthony Zinni argues for changes to the way the U.S. decides to go to war. Plus: New Jersey Gov. Chris Christie’s reasons for taking a trip to Mexico; meet the candidates running for the Democratic nomination for the NYS Senate seat in District 14 in Queens; and a new study finds sharing taxi rides could make the system more efficient by cutting the number of cabs, easing traffic and lowering emissions.