Russia Has Deployed Backfire Bombers to Iran
War Is Boring
1810

There are a million ways you could describe the deployment without using the word “base”.

And… so what? Countries are reasonably free to allow other countries to base troops in them, aren’t they? Japan has a division of US Marines (and a substantial USN surface force), Korea has a US Army unit, and the Philippines is thinking about reopening Clark and Subic Bay.