Senator Rand Paul gives a passionate speech of obeying the Constitution and voting on whether or not the US should be in war around the globe. Montenegro is on the verge of becoming NATO's newest member after ratification of the tiny Balkan nation's admission into the alliance cleared a procedural hurdle in the U.S. Senate. Paul had blocked an earlier attempt to act on Montenegro's ratification despite strong support for the move from Democrats and Republicans. Paul has suggested that adding Montenegro, which had once been a staunch Russian ally, could lead to heightened tension with Moscow, possibly even war.