CAIRO — Egypt’s military warned Saturday of ‘disastrous consequences’ if the crisis that sent tens of thousands of protesters back into the streets is not resolved, signaling the army’s return to an increasingly polarized and violent political scene.

The military said serious dialogue is the “best and only” way to overcome the nation’s deepening conflict over a disputed draft constitution hurriedly adopted by Islamist allies of President Mohammed Morsi, and recent decrees granting himself near-absolute powers.

“Anything other than that (dialogue) will force us into a dark tunnel with disastrous consequences; something which we won’t allow,” the statement said.

Failing to reach a consensus, “is in the interest of neither side. The nation as a whole will pay the price,” it added.

Egypt’s once all-powerful military, which temporarily took over governing the country after the revolution that ousted autocratic leader Hosni Mubarak, has largely been sidelined since handing over power to Morsi weeks after his election.

But it has begun asserting itself again, with soldiers sealing off the presidential palace with tanks and barbed wire, as rival protests and street battles between Morsi’s supporters and his opponents turned more violent.

The statement said the military “realizes its national responsibility in protecting the nation’s higher interests” and state institutions.

At least six civilians have been killed and several offices of the president’s Muslim Brotherhood set on fire since the crisis began on Nov. 22.