Well.... um.... Yes. And no. I suppose!
I guess it depends what you mean by 'a good drink', what medication you are taking if any, and what you mean by 'safely'!
Many popular alcoholic drinks are quite high in carbs (especially beers, ciders, lagers and spirits with non-diet mixers). They are also pretty hefty in calories if you are trying to lose weight.
Added challenges can come in if you are taking insulin (and/or other hypoglycaemic meds), because alcohol interferes with the liver's ability to process carbohydrate and release 'background' glucose, which can mean that your BG levels spike initially and then crash later.
High BGs from rapid carbs in food and drink and also massively varied BG levels - spiking and crashing - are not really good for us. And in the long term are likely to cause damage to eyes, kidneys, blood vessels, heart, nerves blah blah blah...
It's not that it's a complete no-no of course, you just have to be a bit aware, and take things a little easier than you would have done without diabetes in your life. Having said that - many of us are probably drinking too much these days, especially going by the new '14 unit' guidelines.
It might help for you to have a BG meter so that you can see what happens to your blood glucose when you drink, and try to choose the ones that you like which suit your BG better?
Moderation in everything etc etc 🙂