The possibility of an exploding nuclear reactor in California poses the greatest challenge yet for President Bartlet; Kate monitors the impending battle between Russia and China over... Full summary

Embarrassing information about a Bartlet distracts C.J., who is trying to negotiate a deal so that Russia and China do not go to war over Kazakhstan.

As Leo struggles through debate practice, he makes Josh and Lou extremely nervous; Santos takes time off the campaign trail to see his family.

Bartlet tries to deal with a rapidly disintegrating international situation as his daughter's White House wedding gets under way; Josh struggles with dwindling campaign funds and ad... Full summary

Santos visits a black family whose child was killed by a Latino police officer; C.J. tries to mitigate a crisis between China and Kazakhstan.

Presidential candidates Rep. Matt Santos and Sen. Arnold Vinick debate.

When a third party raises the issue of abortion, it brings unwanted attention to both Santos' and Vinick's stance.

Babish's questioning of Toby convinces him that he should retain counsel; Josh must make tough decisions as he tries to bolster the Santos campaign.

As C.J. tries to manage without most of her staff, trouble breaks out in the Middle East, jeopardizing President Bartlet's peace plan.

The Vinick campaign tries to turn things around by targeting issues of immigration, issues Santos has avoided.