Assaults by the paramilitary Rapid Support Forces (RSF) killed more than 100 people, including at least 20 children and nine aid workers, the UN said.
To increase reservists, 18-year-olds in Belgium will soon receive letters informing them about voluntary military service, following a recently announced initiative in the Netherlands.
The search for the fourth soldier continues after three US Army members were found dead when their armoured vehicle was pulled from a swampy area in eastern Lithuania.
As the EU faces increasing security challenges, questions have arisen over whether France has the military capability to lead a joint defence initiative.
Israel and Hezbollah agreed to pull their forces out of southern Lebanon before the end of January. The area will then be secured by the Lebanese army and UN peacekeepers, as part of the agreed conditions of the ceasefire.