Hyderabad: It has been twenty years since the United States declared "war on terror" in retaliation to the September 11, 2001 attacks in New York and Washington.
Former US President George W Bush announced 'war on terror' against al-Qaeda with the goal of eradicating terrorist groups across the world. The threats of attacks on the US still looms even after twenty years while the scenario is different from what it was in 2001. Two US-led wars in Iraq and Afghanistan that killed tens of thousands of civilians with the expenditure of trillions of dollars were also witnessed. US succeeded in capturing and killing al-Qaeda's Osama Bin Laden during an American raid on his Pakistan compound in 2011.
The US wars against terror in various parts of the world including Afghanistan, Pakistan, Syria, Iraq and Africa may have cost the US exchequer a whopping $8 trillion in current dollars, a new study by Brown University concluded.