ARCHIV - Eine Kombo zeigt Abu Bakr al-Bagdadi, den Anführer des IS (undatierter Screenshot aus einem IS-Video), Bundeskanzlerin Angela Merkel (CDU, am 07.12.2015 in Berlin) und den US amerikanischen Politiker Donald Trump (01.12.2015 in Waterville Valley, USA). Die drei Persönlichkeiten wurden vom Time Magazin zu den wichtigsten drei Personen des Jahres 2015 gekürt. Photo by: Michael Kappeler/picture-alliance/dpa/AP Images

A Lebanese policeman who was kidnapped by Nusra Front, background, waves the Lebanese flag and is carried by his relatives, as his mother, left foreground, dances upon his arrival at the government palace, in Beirut, Lebanon, Tuesday, Dec. 1, 2015. The Nusra Front Syria's al-Qaida branch on Tuesday released a group of Lebanese troops held captive for over a year as part of a Qatar-brokered swap that involved Lebanon setting free at least 11 prisoners wanted by the militants, including a former wife of the Islamic State leader Abu Bakr al-Baghdadi. (AP Photo/Hussein Malla)

Lebanese policemen and army soldiers who were kidnapped by Nusra Front, are kissed by Lebanese officials upon their arrival at the government palace, in Beirut, Lebanon, Tuesday, Dec. 1, 2015. The Nusra Front Syria's al-Qaida branch on Tuesday released a group of Lebanese troops held captive for over a year as part of a Qatar-brokered swap that involved Lebanon setting free at least 11 prisoners wanted by the militants, including a former wife of the Islamic State leader Abu Bakr al-Baghdadi. (AP Photo/Hussein Malla)

A Lebanese army soldier who was kidnapped by Nusra Front, weeps and carries the Lebanese flag, as his comrades in the background are received by Lebanese officials, upon their arrival at the government palace, in Beirut, Lebanon, Tuesday, Dec. 1, 2015. The Nusra Front Syria's al-Qaida branch on Tuesday released a group of Lebanese troops held captive for over a year as part of a Qatar-brokered swap that involved Lebanon setting free at least 11 prisoners wanted by the militants, including a former wife of the Islamic State leader Abu Bakr al-Baghdadi. (AP Photo/Hussein Malla)

Lebanese Prime Minister Tammam Salam gives a speech after he received the Lebanese policemen and army soldiers, who were kidnapped by Nusra Front, at the government house, in Beirut, Lebanon, Tuesday, Dec. 1, 2015. The Nusra Front Syria's al-Qaida branch on Tuesday released a group of Lebanese troops held captive for over a year as part of a Qatar-brokered swap that involved Lebanon setting free at least 11 prisoners wanted by the militants, including a former wife of the Islamic State leader Abu Bakr al-Baghdadi. (AP Photo/Hussein Malla)

Lebanese policemen who were kidnapped by Nusra Front, look on as they listen to the speech of the Lebanese Prime minister at the government palace, in Beirut, Lebanon, Tuesday, Dec. 1, 2015. The Nusra Front Syria's al-Qaida branch on Tuesday released a group of Lebanese troops held captive for over a year as part of a Qatar-brokered swap that involved Lebanon setting free at least 11 prisoners wanted by the militants, including a former wife of the Islamic State leader Abu Bakr al-Baghdadi. (AP Photo/Hussein Malla)

A Lebanese policeman, right, who was kidnapped by Nusra Front, is kissed by his wife, left, upon his arrival at the government palace, in Beirut, Lebanon, Tuesday, Dec. 1, 2015. The Nusra Front Syria's al-Qaida branch on Tuesday released a group of Lebanese troops held captive for over a year as part of a Qatar-brokered swap that involved Lebanon setting free at least 11 prisoners wanted by the militants, including a former wife of the Islamic State leader Abu Bakr al-Baghdadi. (AP Photo/Hussein Malla)

A Lebanese army soldier who was kidnapped by Nusra Front, left, is hugged by his mother and sister upon his arrival at the government palace, in Beirut, Lebanon, Tuesday, Dec. 1, 2015. The Nusra Front Syria's al-Qaida branch on Tuesday released a group of Lebanese troops held captive for over a year as part of a Qatar-brokered swap that involved Lebanon setting free at least 11 prisoners wanted by the militants, including a former wife of the Islamic State leader Abu Bakr al-Baghdadi. (AP Photo/Hussein Malla)

A Lebanese policeman who was kidnapped by Nusra Front, background, is carried by his relatives as his mother, foreground, dances upon his arrival at the government palace, in Beirut, Lebanon, Tuesday, Dec. 1, 2015. The Nusra Front Syria's al-Qaida branch on Tuesday released a group of Lebanese troops held captive for over a year as part of a Qatar-brokered swap that involved Lebanon setting free at least 11 prisoners wanted by the militants, including a former wife of the Islamic State leader Abu Bakr al-Baghdadi. (AP Photo/Hussein Malla)

The Lebanese policeman and army soldiers who were kidnapped by Nusra Front, gather for a family picture with the Lebanese officials and the Lebanese Prime Minister Tammam Salam, center background, at the government palace, in Beirut, Lebanon, Tuesday, Dec. 1, 2015. The Nusra Front Syria's al-Qaida branch on Tuesday released a group of Lebanese troops held captive for over a year as part of a Qatar-brokered swap that involved Lebanon setting free at least 11 prisoners wanted by the militants, including a former wife of the Islamic State leader Abu Bakr al-Baghdadi. (AP Photo/Hussein Malla)

Lebanese policemen and army soldiers, who were kidnapped by Nusra Front, shake hands with Lebanese officials and top official security leaders upon their arrival at the government palace, in Beirut, Lebanon, Tuesday, Dec. 1, 2015. The Nusra Frontk, Syria's al-Qaida branch on Tuesday released a group of Lebanese troops held captive for over a year as part of a Qatar-brokered swap that involved Lebanon setting free at least 11 prisoners wanted by the militants, including a former wife of the Islamic State leader Abu Bakr al-Baghdadi. (AP Photo/Hussein Malla)

A Lebanese soldier who was kidnapped by Nusra Front, left, hugs his mother, right, as she kisses him, upon his arrival at the government palace, in Beirut, Lebanon, Tuesday, Dec. 1, 2015. The Nusra Front Syria's al-Qaida branch on Tuesday released a group of Lebanese troops held captive for over a year as part of a Qatar-brokered swap that involved Lebanon setting free at least 11 prisoners wanted by the militants, including a former wife of the Islamic State leader Abu Bakr al-Baghdadi. (AP Photo/Hussein Malla)

A Lebanese policeman, center, who was kidnapped by Nusra Front, hugs his mother, left, upon his arrival at the government palace, in Beirut, Lebanon, Tuesday, Dec. 1, 2015. The Nusra Front Syria's al-Qaida branch on Tuesday released a group of Lebanese troops held captive for over a year as part of a Qatar-brokered swap that involved Lebanon setting free at least 11 prisoners wanted by the militants, including a former wife of the Islamic State leader Abu Bakr al-Baghdadi. (AP Photo/Hussein Malla)

A Lebanese policeman who was kidnapped by Nusra Front, is carried by his relatives upon his arrival at the government palace, in Beirut, Lebanon, Tuesday, Dec. 1, 2015. The Nusra Front Syria's al-Qaida branch on Tuesday released a group of Lebanese troops held captive for over a year as part of a Qatar-brokered swap that involved Lebanon setting free at least 11 prisoners wanted by the militants, including a former wife of the Islamic State leader Abu Bakr al-Baghdadi. (AP Photo/Hussein Malla)

Lebanon's Prime Minister Tammam Salam stands near Qatar's Ambassador to Lebanon Ali bin Hamad Al Marri as they pose for a photograph with Lebanese soldiers and policemen who were captured by the al Qaeda-linked Nusra Front in Arsal upon their return to Beirut Lebanese policemen captured by Nusra Front return to Beirut, Lebanon - 01 Dec 2015 Al Qaeda's Syrian wing, the Nusra Front, released 16 Lebanese soldiers and policemen held captive since August, 2014 on Tuesday in a Qatari-mediated deal that also secured freedom for a jailed ex-wife of Islamic State leader Abu Bakr al-Baghdadi (Rex Features via AP Images)

A Lebanese policeman, captured by the al Qaeda-linked Nusra Front in Arsal, celebrates upon his return to Beirut Lebanese policemen captured by Nusra Front return to Beirut, Lebanon - 01 Dec 2015 Al Qaeda's Syrian wing, the Nusra Front, released 16 Lebanese soldiers and policemen held captive since August, 2014 on Tuesday in a Qatari-mediated deal that also secured freedom for a jailed ex-wife of Islamic State leader Abu Bakr al-Baghdadi (Rex Features via AP Images)

Lebanon's Prime Minister Tammam Salam and Lebanese parliament members greet Lebanese soldiers and policemen who were captured by the al Qaeda-linked Nusra Front in Arsal, after their arrival in Beirut Lebanese policemen captured by Nusra Front return to Beirut, Lebanon - 01 Dec 2015 Al Qaeda's Syrian wing, the Nusra Front, released 16 Lebanese soldiers and policemen held captive since August, 2014 on Tuesday in a Qatari-mediated deal that also secured freedom for a jailed ex-wife of Islamic State leader Abu Bakr al-Baghdadi (Rex Features via AP Images)

A Lebanese policeman, captured by the al Qaeda-linked Nusra Front in Arsal, celebrates upon his return to Beirut Lebanese policemen captured by Nusra Front return to Beirut, Lebanon - 01 Dec 2015 Al Qaeda's Syrian wing, the Nusra Front, released 16 Lebanese soldiers and policemen held captive since August, 2014 on Tuesday in a Qatari-mediated deal that also secured freedom for a jailed ex-wife of Islamic State leader Abu Bakr al-Baghdadi (Rex Features via AP Images)