The tech has been around for a while, and isn't a secret. Some demo vessels have been built to test it over the years.
No doubt Russia and China have been working on it as well.
Edit: It's April 1st so take with a grain of salt. Time to get some caffeine.
"If you will not fight for right when you can easily win without blood shed; if you will not fight when your victory is sure and not too costly; you may come to the moment when you will have to fight with all the odds against you and only a precarious chance of survival. There may even be a worse case. You may have to fight when there is no hope of victory, because it is better to perish than to live as slaves." - Sir Winston Churchill
