Nudnik - n. U.S. colloq. Esp. in Jewish usage: a pestering, nagging, or irritating person
It's often said that the terrorists are only a "small minority" of Muslims. True. But, when it's well connected with everyone from the House of Saud to Pakistan's nuke maestro A Q Khan, a small minority can do a lot of damage. Likewise, the whimperers are only a minority of the American people, but they're even more plugged in – in the media, in politics, in the academy. The only relevant Vietnamese comparison is this: then as now, for America it's a choice between victory or self-defeat.