Russian jets have been observed flying in Estonian airspace for more than 10 minutes on Friday, sparking condemnation from NATO allies. Professor Matthew Sussex says Russia is testing the resolve of NATO as well as potentially sowing discord among the group's allies. Subscribe: http://ab.co/1svxLVE Read more here: https://www.abc.net.au/news/2025-09-22/german-sends-planes-over-poland-as-trump-vows-to-defend-baltic/105800452 ABC NEWS provides around the clock coverage of news events as they break in Australia and abroad. It's news when you want it, from Australia's most trusted news organisation. For more from ABC NEWS, click here: https://ab.co/2kxYCZY Watch more ABC NEWS content ad-free on ABC iview: https://ab.co/2OB7Mk1 Go deeper on our ABC NEWS In-depth channel: https://ab.co/2lNeBn2 Like ABC NEWS on Facebook: http://facebook.com/abcnews.au Follow ABC NEWS on Instagram: http://instagram.com/abcnews_au Follow ABC NEWS on X (Twitter): http://twitter.com/abcnews Note: In most cases, our captions are auto-generated. #ABCNEWS #ABCNEWSAustralia