Recruiters hate wasting their time, effort, and resources on hiring people who leave the organization immediately. Don't mention plans of starting a business or of going abroad as such could raise a red flag for the recruiter.
An ideal response would go like this:
"I would prefer to stay long term, if possible. I think this role is a great match for my skills and experience and offers me a chance to grow professionally. I expect to be here for as long as I have the opportunity to make contributions."