Washington:- US singer Janet Jackson has put her Unbreakable world tour on hold until spring to have surgery. Jackson said her doctors told her she needs an operation ‘soon’. ‘Please pray for me, my family and our entire company during this difficult time,’ the 49-year-old asked fans. She said she would not be giving any details of her health condition. Jackson began her tour last August in Vancouver and had dates across the US, Canada and Europe till next June.–BBC