What an interesting question!
I'll throw some ideas out there, in the interest of broadening the answer field, but I admit, international experience is not my forte.
Start with the Job
I think that "international experience" is broad enough that you want to make sure you are tuning the resume to fit the type of job you're thinking of, and pursuing jobs that fit your goals, first off. For example, International Work could include:
- The ability and willingness to relocated permanently or semi-permanently
- Willingness to do intense travel for long periods
- Fluency in languages
- Comfort working with foreign cultures
- Awareness of international laws and regulations
- Experience and vision for a global marketplace
Not every international job is right for a person, nor is a person with international experience right for any job. I'd start with the position, and make sure to highlight from there.
General Resume Format & Tuning
Generally applications include:
- a cover letter
- education & skills section
And I think you can highlight international compatibility in any of them.
The Cover Letter can certainly cover your interest and willingness to do travel and relocation.
The Skills/Education could and should include:
- foriegn languages
- international education
- certification/accreditation in international credentials and organizations
And then the experience section can highligh your international impact. I don't want steal entirely from Enderland's answer, but that's the perfect example.
Sum It Up
I think it's particularly important to figure out the key points and sum up. Doing a thoughtless listing of international bullet points is as unlikely to yeild results as any other thoughtless listing. The experience section is always open ended, so how you write it and how the reader interprets that writing are key.
I would think the following guidelines would be a place to start:
- Highlight work with a single country or collection of countries when the experience is deep, summarize when the experience is broad - ie, "Was the account manager for all India-based accounts" or "Was the regional account manager for all of SE Asia"
- Show an awareness of using the international market to its advantage - if you've basically done the same steps in each location, it hardly matters that it was international - highlight areas where an understanding of the uniqueness of each locale really mattered and where you can speak to victories in the interview
- Clarify the nature of the contact - if you regularly traveled before, the assumption is that you will again - find a way to drop it in there. "Did XYZ through regular remote communication and a series of monthly on location meetings"