Iraqi PM Warns of Islamic State Plots

The transcript covers three main topics: planned subway attacks in the US and Paris, President Obama's call for increased global efforts to combat the Ebola outbreak at the United Nations, and a market sell-off affecting major indices like the Dow, S&P, and NASDAQ. The information on the subway attacks is based on captured Islamic State militants, while the Ebola section highlights the urgency of international cooperation to address the crisis. The market section provides an update on the current economic situation, noting significant declines in major stock indices.

What is the general trend of the stock market as mentioned in the text?

Which stock market index was reported to be the hardest hit?