President Barack Obama's national security adviser says the United States thinks Pakistani Taliban leader Baitullah Mehsud is dead. President Barack Obama's national security adviser, James Jones, says all indications are that Mehsud was killed and he calls Mehsud 'a real thug.' Jones also says it appears there is now a fight within the top ranks of the remaining Tehrik-e- Taliban Pakistan (TTP). Jones told "Fox News Sunday" that Mehsud's apparent death and the power struggle are good signs of progress in Pakistan.