"tip of the iceberg : (idiomatic) A small indication of a larger possibility; a problem that is much..."
On this day 60 years ago in 1959, the Antarctic Treaty was signed. The day was declared by Our Spaces as Antarctica Day to build awareness about Antarctica and to emphasize the importance of nations co-operating peacefully through science to make decisions about places beyond the boundaries of sovereign states.”
- https://en.wiktionary.org/wiki/tip_of_the_iceberg#English
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