Medvedev, speaking after a G20 summit in Toronto, said: "I do not really understand how a parliamentary republic would look and work in Kyrgyzstan."Will this not lead to a chain of eternal problems -- to reshuffles in parliament, to the rise to power of this or that political group, to authority being passed constantly from one hand to another, and, finally, will this not help those with extremist views to power?"In its current state, there are a host of scenarios for Kyrgyzstan, including the most unpleasant scenario -- going up to the collapse of the state," Medvedev said.