Canada will send more military trainers to Iraq to drill local troops combatting the Islamic State group, Prime Minister Justin Trudeau said, while remaining committed to pulling out its fighter jets.
US President Barack Obama said sending more troops to Iraq signals a "new phase" in the fight against the Islamic State group.
Secretary of State John Kerry said it was too early to discuss cutting the number of US troops stationed in Asia and South Korea.
US Secretary of State John Kerry said Russian troops were beginning to pull back from Ukraine but warned Moscow still needed to do more to see sanctions eased.
Western allies should learn if their punishing sanctions on Russia have softened its stance on Ukraine enough to justify Europe's economic recovery.
The US military expects to increase the number of troops deployed to Liberia to fight the Ebola outbreak to nearly 4,000.
Ukraine waited to see if a Russian-backed truce lasted through the day before starting to withdraw forces from a frontline.
The prime minister of the self-proclaimed People's Republic of Donetsk said that the pro-Russian rebels have removed artillery from frontline areas.
Ukrainian forces and pro-Russian militias were due to pull back their troops from a demilitarised zone created under a new peace plan.
Russia hailed Ukraine's offer of self-rule for separatist rebels in the east under a peace plan.
Russia is to reinforce its troop deployments in annexed Crimea because of the worsening crisis in Ukraine and the buildup of foreign forces nearby..
Barack Obama's vow to take the fight to jihadists will expand a US-led air war already underway and likely require deploying more special forces.
Kiev and pro-Russian rebels reached an agreement to pull back troops, swap hostages and send humanitarian aid to war-ravaged eastern Ukraine.
UN Secretary General Ban Ki-moon expressed grave concerns about the intensifying conflict in Ukraine.
The Philippines said it will repatriate over 400 of its troops serving as UN peacekeepers amid security threats and concerns over the Ebola virus.
National Guard troops withdrew from a US town gripped by nearly two weeks of protests over the fatal police shooting of a black teenager.
The White House urged Moscow to stop its "extremely dangerous and provocative" attempts to destabilize Ukraine.
Russian armoured vehicles were moving towards the Ukrainian border. British media reports that a small group had crossed into Ukraine.
Fierce battles on Ukraine's porous eastern border left 15 government troops dead.
Australia is preparing to tighten sanctions on Russia, as Prime Minister warned President V. Putin against sending his troops into Ukraine.