On 9 August 2022, Sviatlana Tsikhanouskaya appointed Kavaleuski as Deputy Head and Representative for Foreign Affairs in the United Transitional Cabinet of Belarus that is opposed to the de facto government of Alexander Lukashenko.

[3] Valery Kavaleuski was born in the village of Bieražnoje in the Palesse area in southern Belarus in 1976 and graduated from the Berazhnoe Secondary School in 1993.

Kavaleuski resigned from diplomatic service during the Jeans Revolution,[citation needed] when Lukashenko remained in power for a third term after the disputed 2006 Belarusian presidential election.

Before joining Sviatlana Tsikhanouskaya's team in December 2020, Kavaleuski worked in the World Bank Group in Washington, DC.

[9] On 16 September 2014, Kavaleuski participated in a protest in Washington, D.C. near the Belarusian embassy, calling for information about Viktar Hanchar and Anatol Krasouski, who were forcefully disappeared in 1999 in Minsk.

[3] In October, Kavaleuski and Tsikhanouskaya started negotiating an alliance with the Ukrainian government against the possibility of Russia taking full control of Belarus.