Poland has pursued a policy of economic liberalization since 1990 and today stands out as a success story among transition economies.

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More placid than Egypt with its intense, teeming vitality, Tunisia has had a calmer transition, and has often been described as the success story of the Arab Awakenings.

CNN: Why Tunisia's leaders must resist urge for power grab

Success in Egypt in the transition towards democracy is really a critical thing and we've always been very focused on that.

WHITEHOUSE: Press Briefing

Both Couper and Segal say a trip in advance is an essential part of making your transition a success.

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But analysts say continuing frustration over corruption and lack of progress on the economy could pose a danger to the success of Tunisia's transition to democracy.

BBC: Arab uprising: Country by country - Tunisia