[threeseed]

This is completely false.

US government imposed sanctions on 17 Saudi officials who were connected with the killing.

They couldn't punish Prince Mohammed bin Salman because he is expected to be King at some point soon which means any sanctions would be nonsensical. How does a travel ban for example work against the leader of any country let alone an (unfortunate) ally.

There simply isn't any good options for punishing world leaders.

[trasz]

Erm, no. A single JDAM would send much stronger signal. Of course it would bring repercussions, and that is the reason for purely symbolic actions taken instead: USA won’t do anything that could hamper their military influence in region.

[pseudalopex]

They banned Mugabe.[1]

[1] http://news.bbc.co.uk/2/hi/africa/1836935.stm