"The Gulen organization is much more than some cleric in Pennsylvania. It’s a multi-billion dollar, multi-level criminal organization, and it is truly a danger for stability in the world. It really needs to be investigated closely in respect to this horrible attack [murder of Russian Ambassador to Turkey Andrey Karlov]," Amsterdam said.
"It’s a terrible state of facts, but the organization takes advantage of the West’s ignorance of Islam. … They have a massive political impact on the United States," he added.
The lawyer explained that the presidential campaign of Democratic nominee Hillary Clinton received major donations from the movement.
"The Democrats, rather than talking about the Russian hack, actually need to talk about the Gulen hack. There were millions of dollars Gulen tunneled into the campaign trying to assist Hillary Clinton," Amsterdam said.
"Having watched the video of this secular policeman making a statement that relates to Aleppo, I think this is a warning for everyone not to take the easy answer, but to really study this deeper. It will bring Russia and Turkey closer together. I see both leaders understanding very well that this was a provocation, and the best way to answer a provocation is to, in fact, further stabilize the relationship," Amsterdam said.
Mevlut Mert Altintas, a Turkish riot police officer, shot Russian Ambassador to Turkey Andrey Karlov dead at an art gallery exhibition opening in Ankara late on Monday. He mentioned Syria and shouted "God is great" during the attack. The Turkish government said the murderer wanted to disrupt Ankara’s ties with Moscow.