tipoftheiceberg Tiny fraction The 6/17/72 Watergate break-in report was just this Taste of what's to come Small visible portion Hint of the whole Hint of bigger things Hidden trouble indicator ... or what you'll need to finish this crossword? Arctic tern's nesting area? Arctic tern's landing spot? Little that's visible Hardly everything Small part that's visible Big trouble's bit The whole's small section Symbol of much greater hidden trouble Visible part, belying ominous immensity Bit that's visible