Saad Aljabri, a former top intelligence official, filed suit in Washington alleging that Crown Prince Mohammed bin Salman sent a team of agents to Canada to kill him.
To try to force a former Saudi intelligence officer to return to the kingdom, Crown Prince Mohammed bin Salman asked for his help, targeted his family and sought to have him arrested abroad.
Some are hiring lobbyists with links to the Trump administration, looking to build support at a time when the de facto Saudi ruler is beset by economic problems and criticism over human rights violations.
Crown Prince Mohammed bin Salman seemed to be keeping a low profile. Then he detained senior members of the royal family and started an oil price war.