now last week i talked to senator johnny isaacson, a republican from georgia on this show.overnment shutdown would be a bad idea. >> shutting the government down is bad idea. defending the country's important and making sure social security checks are delivered is important. but it's a better idea to run the country like it's supposed to be run. do your responsibility. appropriate money, make cuts where you you have to. if you have to change the tax code, change the tax code. but do it in the context of the macro sense, not the micro. >> can't agree more, joining me are david gergen. cnn political analyst and professor of public service and the director of the center of public leadership at the harvard kennedy school and ron brownstein, executive director at the national journal magazine in washington. gentlemen, good to see you. ron, republicans could push president obama to accept further budget cuts by threatening to shut down the government. we've heard one leading republican senator, johnny isaacson, you've heard him say it's a very bad idea. could we be headed down th