The shadowy plot, backed by high-ranking officials within the ruling party, aims to unleash violence, chaos and theft to portray the protesters as violent.

As US cities heighten security, Iran’s history of reprisal points to murder-for-hire plots No credible threats to the homeland have surfaced publicly in the hours since the stealth American ...

Fast Fact The standard deviation is by far the most popular measure. People usually mean standard deviation when they speak of volatility.

Omar Haouchar was arrested over the alleged plot in January. The 32-year-old has not yet entered a plea to the single charge of conspiracy to murder.