OTTAWA—The Canadian commander of a multinational battlegroup in Latvia says he is working to ensure his troops have enough supplies and can talk to each other, as mounting tensions between the NATO military alliance and Russia feed fears of a new war in Europe. Canada has more than 500 soldiers in Latvia as part of a broader NATO reassurance mission first launched in 2017 in response to concerns about Russian aggression across eastern Europe. The Canadian contingent includes about 350 troops primarily from Valcartier, Que., who form the core of a 1,000-strong NATO battlegroup stationed in Camp Adazi, about 30 kilometres northeast of the Latvian capital of Riga. That battlegroup also includes military personnel and equipment from nine alliance nations, including Poland, Spain, Italy and the Czech Republic, all of whom fall under the command of Lt.-Col. Dan Richel. In an interview with The Canadian Press on Thursday, Richel said …