On May 1, 2011, President Barack Obama announced that the U.S. conducted an operation that killed al-Qaeda leader Osama bin Laden at his compound in Abbottabad, Pakistan. The announcement drew worldwide praise, with spontaneous celebrations at Ground Zero, Times Square, and outside of the White House. The raid on bin Laden's compound in Abbottabad led to a rise in diplomatic tensions between the U.S. and Pakistan. With civilian deaths from the United States' drone program in so-called "signature strikes", the 2011 NATO attack in Pakistan, which led to the deaths of 24 Pakistani military officers, and the closure of NATO supply lines to neighboring Afghanistan, Pakistan–United States relations remain fractured as a result of the War on Terror.