What do I do? I make it a policy not to go to countries where I can't be armed, and have stuck to that for the last 15 years or so.
Check with the given country's embassies in Washington. There are still a few places where you can carry if you jump through enough hoops. (I'm thinking of doing a trip to South Africa, where it's still possible to carry, though not as easy as it was when I went there long ago.)
Some countries treat a knife the way New York would treat a visitor with a concealed firearm (think: England today). Some are more cool about that. Again, check with the embassy.
Mini-Mag flashlights are legal everywhere, and all the Kubotan techniques will work. A cane or walking stick is legal pretty much everywhere.
God, Rick, you've reminded me again how much I love the USA...