Ukraine's new president signaled on Wednesday he would be ready to hold talks with opponents in eastern Ukraine if pro-Russian separatists waging an insurgency there agreed to lay down their weapons.

The rebels show no sign of giving up their arms, but opening talks would be a big step on the road to peace, building on Ukrainian President Petro Poroshenko's meetings this week with Moscow's envoy and with Russian President Vladimir Putin in France last week.

Poroshenko, trying to act swiftly after being sworn in as president on Saturday, was quoted by his press office as telling the governor of the Donetsk region of east Ukraine that he would not rule out holding "roundtable" talks with "different parties."