The rhetoric from senior officials in the bloc's bodies suggests that political decisions have been taken, but there are questions about when they might be implemented, according to Landsbergis.
"The wording 'sooner or later gas and oil will be abandoned' [...] suggests that it has already been decided. Only the question of time remains then," the minister told reporters.
"On one hand, we can say that we are already moving in a good direction, but on the other hand, it is an open question as to how many more people have to die," he added.
However, Landsbergis said he had "no optimism in the ongoing political discussion".
"Actually, I don't see any more additional arguments. Everything is absolutely clear: crimes of genocide are being committed, entire towns are being cleansed, terrible crimes are being committed against women, against children, and deportations are being carried out," he said.