As the Ukrainian Pravda reports he stated this on Thursday, speaking at a special meeting of the opposition factions.
"The next meeting should take place in a constitutional way. We have to block the parliament until the Rada-3 system is working," said Yatsenyuk.
He also thanked the members of the three factions for coming to the meeting in the Parliament.
"The greatest threat to the regime is our unity," said the head of Batkivschyna faction.
Also, the first task of the united opposition according to Yatsenyuk is to ensure Yulia Tymoshenko's treatment abroad.
"Today we are talking about her physical survival, as well as the physical survival of Yurii Lutsenko," he said.