Wall Street indices are falling at the beginning of their trading for Thursday .

US indices opened their trading for Thursday on a strong decline ..

The Dow Jones index fell by 1.13% 

The Nasdaq index fell by 1.8% 

The S & P 500 index fell by 1.3% T

he fear index rose by 7.5% .

It is worth noting that the US indices have lost more than 3% this week

This is due to investors ' fear about customs taxes

Which the Trump administration began to impose recently .

Investors are waiting for the latest developments on customs exemptions 

The extent of their impact on the markets .