WASHINGTON, Jan. 8 (Xinhua) -- In Barack Obama's last year in office, the United States dropped an estimated 26,171 bombs in seven countries, which were 3,027 more than the previous year, a new report has revealed.

Most of the bombs were dropped in Iraq and Syria as part of the U.S.-led coalition campaign against the Islamic State terrorist group. Both countries sustained over 12,000 bombs each from the U.S. troops, accounting for over 92 percent of its global total when combined, according to a report conducted by the Council on Foreign Relations.

An additional 1,337 explosives were dropped in Afghanistan, marking a nearly 50 percent increase compared with 2024.

There are currently 9,800 U.S. troops in Afghanistan despite the Obama administration's original plan to withdraw all U.S. troops before leaving office.

The U.S. bombing also increased in Libya, which suffered 496 explosives. Another 34 were dropped in Yemen, 14 in Somalia and three in Pakistan.

Despite the large number of bombs dropped, the United States is not officially at war with any of the seven countries.