The bulk of the drill was held in the North Sea, far from Russia and Ukraine, and involved military bases in Belgium, Britain, Denmark, the Netherlands.
The ceasefire was tested by renewed fighting on Sunday and accusations from both sides of ceasefire violations, but both Israel and Hamas have said they are committed to the deal.
Syria's civil war began in 2011 when mass protests against the government of then-President Bashar al-Assad were met with a brutal crackdown and spiralled into armed conflict.
Moscow has rejected the possibility of a ceasefire in Ukraine, stating that this idea contradicts the agreement reached by Vladimir Putin and Donald Trump in Alaska. Yet the Kremlin still wants the second meeting between the two in Budapest to proceed.
Catch up with the most important stories from around Europe and beyond this October 21st, 2025 - latest news, breaking news, World, Business, Entertainment, Politics, Culture, Travel.
Euronews (stylized in lowercase) is a pan-European television news network, headquartered in Lyon, France. It is a provider of live-streamed news, which can be viewed in Europe and North Africa via satellite, and in most of the world via its website, on YouTube, and on various mobile devices and digital media players. Read More...