[overkill28]

> There was one problem, though: Hua knew that G.E. would deny permission to give the talk if he asked, which he was supposed to do. “Since G.E. is a high-tech company, it is difficult to get approval even to present at conferences in the United States,” he says. The company was concerned about giving away proprietary information.

If a foreign country invites you to come give a talk on your work and you're afraid to ask your employer for permission, do not go.

That country is not operating in your interest.