Saleh has no option other than stepping down

In an interview with ICANA on Tuesday, Karimi said: "Yemeni people are able to depose Saleh like what happened to Hosni Mubarak in Egypt."

He further noted: "Both sides in Yemen have shown a strong motivation to win the battle, but people are determined to depose the dictator and they will have the upper hand."

Commenting on Saleh's recent decision to step down and transferring power to the military, Karimi said: "according to the Yemeni constitution, Saleh has no such right to transfer his authority to the military."

"He is forced to leave power to the Yemeni people altogether." He added.