What % of the Syrian population has been killed/injured/displaced this past few years? How about Palestinians in the West Bank? How many people were murdered, etc. under Robert Mugabe in Zim? South Sudan? And what really has the rest of the world done? Not much...
Total population may not be huge per se, but as a % of the people in those countries it's very high. What's 1B in an empire of trillions? An MH17 was carrying mostly Dutch, but you don't see the Dutch government doing much about it other than complaining.
Alas, lives are cheap.