The leaflets were dropped in a canister by F-15 fighter jet last week . Gruesome drawing shows 7 men being lined up for meat grinder . Sign above them reads 'Daesh Recruiting Office ' , Daesh is Islamic for ISIS . The 60,000 pamphlets fell over Raqqa , where ISIS is 'losing momentum '
The leaflets were dropped in a canister by F-15 fighter jet last week . Gruesome drawing shows 7 men being lined up for meat grinder . Sign above them reads 'Daesh Recruiting Office ' , Daesh is Arabic for ISIS . The 60,000 pamphlets fell over Raqqa , where ISIS is 'losing momentum '