Here are a few pictures from different parts of the globe that made news this week.
Nearly defeated on the battlefields, IS has reverted to what it was before its spectacular conquests in 2014 - a shadowy insurgent network that targets civilian populations with guerrilla-style attacks and exploits state weaknesses.
The front line has grown more tense in recent days as Turkey threatens to advance on the town to clear it of the US-backed fighters.
Turkey and allied Syrian opposition fighters captured the city of Afrin nearly two months after the launch of an operation to clear the area of the main Syrian Kurdish forces.
Many of the fighters entrenched in the Damascus are originally from the area and move around using an elaborate network of underground tunnels, giving them an advantage against President Assad's forces.
After days of diplomatic wrangling, the Security Council on Saturday adopted a resolution calling for a 30-day ceasefire in Syria without delay to allow for aid deliveries and medical evacuations.
Stop bombing Ghouta: People throng outside Russian Consulate in Istanbul to protest against Syrian airstrikes
At least 14 civilians including three children were killed in strikes on Sunday, said the Syrian Observatory for Human Rights monitor, bringing the total number of dead in the week to 530, among them over 130 children.
President Bashar al-Assad's forces launched a major bombing campaign against the enclave on the edge of Damascus a week ago, and have since killed more than 500 people.
The US-led anti-jihadist coalition carried out strikes in "self-defense" against forces loyal to Syrian President Bashar al-Assad, leaving an estimated more than 100 dead.
Road to Idlib: Life in jeopardy in the northern Syrian city as Russia-backed government forces press for victory
Syrian government forces and allied militiamen are advancing on the largest remaining rebel-held territory in the country's north, forcing thousands of civilians to flee toward the border with Turkey amid a crushing offensive just as the cold winter weather sets in.
The gunman appeared to condemn Russia's military role in Syria, shouting: "Don't forget Aleppo! Don't forget Syria!".