It seems as if there are elements in Iraq that don't want a party of Christians operating there. From [1] Reuters, with thanks to Nicolei:

"I appeal to Sweden's King Carl XVI Gustaf and Queen Silvia, His Holiness the Pope, world Christian parties and the Association of Iraqi Muslim Clerics ... to work towards freeing me," Minas al-Yusifi, said in a video aired on Thursday.

The leader of Iraq's Christian Democrats was snatched three weeks ago by the Martyr al-Isawy Brigades whose name was on a black banner behind him during the video released by fighters.

He returned to Iraq two years ago to re-establish the party after seeking asylum in Sweden 20 years ago.