Speaking to RFE/RL in an exclusive interview, Leanca said Moldova hoped Ukraine will be able to preserve its territorial integrity.
"What is happening in Ukraine shows that if a country does not react immediately to the danger [of separatism] -- if you don't tackle at home -- it spreads to the whole region," Leanca said.
Moscow-backed Transdniester unilaterally declared independence from Moldova in 1990. The two sides fought a short war in 1992.
Transdniester's independence has never been recognized by any other country.
OSCE-mediated negotiations to solve the conflict have been largely ineffective.