WASHINGTON: Acting Coordinator for Counterterrorism, Justin Siberell has presented annual US report over war on terror letting it known that attacks dropped by 13 percent in the last year across the world, reported Friday.

The report stated that Operation Zarb-e-Azb weakened Al-Qaeda’s network and thus terror attacks lessened in Pakistan in 2015.

The Department of State has alleged Iran of terrorists’ patronage, ‘the most of all countries’.

"The United States continues to work to disrupt Iran’s support for terrorism. Iran remains the leading state sponsor of terrorism globally," said Justin Siberell.

Terror incidence increased in Bangladesh in 2015, according to the United States department. However, the department has declared Islamic State in Iraq and the Levant the biggest threat to the world.

"More than 55 percent of all attacks took place in five countries: Iraq, Afghanistan, Pakistan, India, and Nigeria," Siberell said.

There were several weekly briefings by spokesperson of the department, Mark Toner earlier where he lauded Pakistan’s efforts to eliminate terrorism from the region and expressed satisfaction.

The report has come in a few weeks after the United States targeted Afghan Taliban chief Mullah Akhtar Mansoor in Balochistan’s Nushki area and killed him. He was enlisted as Pakistani citizen, stated to be a Chaman resident, in National Registration and Database Authority of the country.

He was also listed as a voter in the final voter list of an election there.

Mansoor was travelling from Iran to Afghanistan through Pakistan and was targeted with a drone that took off from Afghanistan base and violated Pakistan’s sovereign integrity. The strike received flak from both civil and military leadership.

Army Chief held a meeting with the US Ambassador, David Hale and termed the first ever attack in Balochistan detrimental to the bilateral terms.

However, the United States has announced to continue strikes in Pakistan to safeguard its interests.

However, Operation Zarb-e-Azb launched by Chief of Army Staff, General Raheel Sharif in June 2014 has received a huge applaud from all over the world.

Different military leaders in the South Asia have lauded Army Chief Sharif’s sincere effort to weed-out extremism that is endorsed by the current political government ever since the announcement of the operation.

By May 20, over 4,000 terrorists were killed in dozens of airstrikes and hundreds of ground offensives in different areas of Federally Administered Tribal Areas. While hundreds of hideouts have been destroyed, leaving different outfits with crippled or no network.