Karel De Gucht , of the Organization for Security and Cooperation in Europe (OSCE), is due to meet President Vladimir Voronin and other officials.
On June 1, De Gucht is scheduled to hold talks in Tiraspol with Igor Smirnov, the leader of Moldova's separatist region of Transdniester.
He then heads to Ukraine for talks with President Viktor Yushchenko and other top officials.
ARCHIVE: For an archive of RFE/RL's coverage of Transdniester, click here.
President Putin at a Kremlin meeting in April (epa)
PUTIN SPEAKS OUT: During a January press conference, Russian President Vladimir Putin said there is a need for "universal principles" to settle "frozen" conflicts in the CIS. His comments came against the background of impending talks on the future status of Kosovo, which many predict will grant it a form of "conditional independence" from Serbia and Montenegro. As an ally of Serbia, Moscow has consistently opposed the idea of Kosovar independence. Putin's remarks suggest he may be shifting his position, but only if the principles applied to Kosovo are also applied to frozen conflicts in the former Soviet Union. If Kosovo can be granted full independence, he asked, why should we deny the same to Abkhazia and South Ossetia? (more)