BostonGlobe.com Political Headlines - April 30, 2012

Here are the top POLITICAL headlines from BostonGlobe.com today:    

Obama's nuclear plan tangled in election politics: National security reporter Bryan Bender reviews President Obama's plan to substantially reduce the U.S. nuclear arsenal - and how he plans to deal with the political consequences in an election year.   State GOP's caucus picks leave Romney slate slighted: Political reporter Stephanie Ebbert reports how Mass. Republicans went for Ron Paul's delegate picks for the Republican National Convention.      Directories identified Elizabeth Warren as minority: Political reporter Stephanie Ebbert uncovers documents that showed U.S. Senate candidate Elizabeth Warren was listed as a Native American faculty member in American law school directories for almost a decade, leading some to question whether she tried to use minority status as an advantage.   A revolution: women fight in Marines: National security columnist Juliette Kayyem writes about the historic announcement that women will now formally qualify to be assigned to combat roles in the Marines.