Islamic State-linked militants besiege Philippine city

Philippine President Rodrigo Duterte gestures as he answers questions from reporters at Manila’s international airport, Philippines, Wednesday, May 24, 2017. Duterte warned Wednesday that he’ll be harsh in enforcing martial law in his country’s south as he abruptly left Moscow to deal with a crisis at home sparked by a Muslim extremist siege on a city, where militants burned buildings overnight and are feared to have taken hostages.

Philippine President Rodrigo Duterte gestures as he answers questions from reporters at Manila’s international airport, Philippines, Wednesday, May 24, 2017. Duterte warned Wednesday that he’ll be harsh in enforcing martial law in his country’s south as he abruptly left Moscow to deal with a crisis at home sparked by a Muslim extremist siege on a city, where militants burned buildings overnight and are feared to have taken hostages.

Philippine President Rodrigo Duterte salutes as he arrives at Manila’s international airport, Philippines, Wednesday, May 24, 2017. Duterte warned Wednesday that he’ll be harsh in enforcing martial law in his country’s south as he abruptly left Moscow to deal with a crisis at home sparked by a Muslim extremist siege on a city, where militants burned buildings overnight and are feared to have taken hostages.

Policemen watches vehicles at a checkpoint in Manila, Philippines, Wednesday, May 24, 2017 as the Philippine National Police is placed under full alert status following the declaration of martial law in Mindanao southern Philippines. Philippine President Rodrigo Duterte warned Wednesday that he’ll be harsh in enforcing martial law in his country’s south as he abruptly left Moscow to deal with a crisis at home sparked by a Muslim extremist siege on a city, where militants burned buildings overnight and are feared to have taken hostages. (AP Photo/Aaron Favila)  (Aaron Favila / AP)

Policemen inspect motorcycle riders at a checkpoint in Manila, Philippines, Wednesday, May 24, 2017 as the Philippine National Police is placed under full alert status following the declaration of martial law in Mindanao southern Philippines. Philippine President Rodrigo Duterte warned Wednesday that he’ll be harsh in enforcing martial law in his country’s south as he abruptly left Moscow to deal with a crisis at home sparked by a Muslim extremist siege on a city, where militants burned buildings overnight and are feared to have taken hostages.