I think even the countries that abstained are on their side.
They're obviously being pressured to be on that side but all of the UNSC veto holders do that. The veto power shouldn't exist because this is what happens. Veto holders are allowed to bully whoever they want with no meaningful consequences.
They're not willing to stand up to an obvious bully and push for further investigation. Closer to your second and third statements than the first. With the third being the most likely.
I do understand how my first comment could be misunderstood now though.